Sen. Rand Paul of Kentucky on Tuesday questioned how Senate Republicans could, "with a straight face," potentially confirm former CIA Director David Petraeus as secretary of state — a position he is reportedly under consideration for in President-elect Donald Trump's emerging Cabinet.
Petraeus pleaded guilty in 2015 to a misdemeanor charge of mishandling classified information. Trump and fellow Republicans lambasted Democratic presidential nominee Hillary Clinton on the campaign trail for doing what he claimed was worse while she was secretary of state.
"I think there's going to be the problem that everything we complained about with Hillary Clinton revealing emails that were classified or not treating them appropriately are the same issues for Petraeus," Paul told reporters Tuesday. "So I don't know how we can, with a straight face, say, 'Oh, we're going to appoint someone to a cabinet position who actually plead guilty to a similar offense.'"
See Rand Paul with his famous father:
Politicians Ron Paul and son Rand Paul
Politicians Ron Paul and son Rand Paul
Republican U.S. Senate candidate Rand Paul appears with his father U.S. Rep. Ron Paul, R-Texas, during a campaign event in Erlanger, Ky., Saturday, Oct. 2, 2010. (AP Photo/Ed Reinke)
Republican presidential candidate, Rep. Ron Paul, R-Texas, right, and his son Sen. Rand Paul, R-Ky., speak with supporters before the start of a campaign event at a hotel in Ames, Iowa, Thursday, Aug. 11, 2011. (AP Photo/Charles Dharapak)
Republican presidential candidate Rep. Ron Paul, R-Texas, stands with, from left, his wife Carol, his son Sen. Rand Paul, R-Ken., and an unidentified boy after he speaks at the Republican Party's Straw Poll in Ames, Iowa, Saturday, Aug. 13, 2011. (AP Photo/Charles Dharapak)
DAVENPORT, IA - JANUARY 02: Sen. Rand Paul (R-KY) (L) introduces his father, Republican presidential candidate U.S. Rep Ron Paul (R-TX) (R), at a campaign event during his 'Whistle-stop' tour with at the Steeple Gate inn in January 2, 2012 in Davenport, Iowa. A poll published Saturday by the state's largest newspaper, The Des Moines Register, put Paul in second place of a large field of GOP candidates going into Tuesday's 'first in the nation' Iowa Caucuses. (Photo by Win McNamee/Getty Images)
Republican presidential candidate, Rep. Ron Paul, R-Texas follows his son Sen. Rand Paul, R-Ky., left, during a campaign stop at the Steeple Gate Inn in Davenport, Iowa, Monday, Jan. 2, 2012. (AP Photo/Charles Dharapak)
WASHINGTON - JUNE 22: U.S. Sen. Rand Paul (R-KY) (L) talks to his father Rep. Ron Paul (R-TX) (R) during a news conference June 22, 2011 on Capitol Hill in Washington, DC. A number of Republican congressional members joined The Cut, Cap, Balance Pledge Coalition at the news conference 'to oppose any debt ceiling increase unless a 'Cut, Cap and Balance' plan is passed.' (Photo by Alex Wong/Getty Images)
Republican presidential candidate Rep. Ron Paul, R-Texas, left, and his son, Sen. Rand Paul, R-Ky., applaud on stage at a campaign event at a hotel in Des Moines, Iowa, Wednesday, Aug. 10, 2011. (AP Photo/Charles Dharapak)
CEDAR RAPIDS, IA - AUGUST 10: U.S. Senator Rand Paul (L) (R-KY) listens to his father Texas Congressman and Republican presidential hopeful Ron Paul speak at a campaign stop August 10, 2011 in Cedar Rapids, Iowa. Most of the candidates hoping to receive the Republican presidential nomination are crisscrossing Iowa this week hoping to gain support in front of the Republican party debate and the Iowa Straw Poll. (Photo by Scott Olson/Getty Images)
Republican U.S. Senate candidate Rand Paul, left, shakes hands with U.S. Sen. Jim DeMint, R-South Carolina, as Paul's father Rep. Ron Paul, R-Texas, applauds, center, during a campaign event in Erlanger, Ky., Saturday, Oct. 2, 2010. (AP Photo/Ed Reinke)
In this Tuesday, May 18, 2010, photo, Republican U.S. Senate candidate Rand Paul celebrates his primary election victory in front of his mother and father Carol and Ron Paul in Bowling Green, Ky. (AP Photo/Ed Reinke)
Former Texas Rep. Ron Paul, and his wife Carol await the start of their son, Sen. Rand Paul, R-Ky., announcement of the start of his presidential campaign, Tuesday, April 7, 2015, at the Galt House Hotel in Louisville, Ky. (AP Photo/Carolyn Kaster)
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Paul previously expressed concerns about confirming both former New York City Mayor Rudy Giuliani and former UN Ambassador John Bolton to lead the State Department, publicly airing his grievances regarding both.
On Monday, Trump tweeted shortly after meeting with Petraeus that he "was very impressed!"
"Just met with General Petraeus — was very impressed!"
Learn more about David Petraeus:
Former CIA Director David Petraeus through the years
Former CIA Director David Petraeus through the years
Former Director of the Central Intelligence Agency (DCIA) under President Barack Obama, Gen. David Petraeus interviewed for the documentary, 'The Spymasters,' about CIA Directors for CBS/Showtime. With producers Chris Whipple, Gedeon and Jules Naudet, New York, New York, July 22, 2015.
(Photo David Hume Kennerly/Getty Images)
Director, President and CEO of The Woodrow Wilson Center Hon. Jane Harman and Former Director, Central Intelligence Agency Gen. (Ret.) David H. Petraeus speak at the 2016 Concordia Summit - Day 1 at Grand Hyatt New York on September 19, 2016 in New York City.
(Photo by Ben Hider/Getty Images for Concordia Summit)
Robert DeNiro, Harvey Keitel and General David Petraeus attend the 2nd Annual Speyer Legacy School Access To Opportunity Initiative Benefit at Carnegie Hall on April 6, 2016 in New York City.
(Photo by Bobby Bank/WireImage)
Former CIA director David Petraeus speaks after leaving the Federal Courthouse in Charlotte, North Carolina, April 23, 2015. Petraeus was sentenced to two years of probation and ordered to pay a $100,000 fine after pleading guilty to mishandling classified information.
Former Director of the Central Intelligence Agency David Petraeus arrives for the Breakthrough Prize in Life Sciences awards Thursday, Dec. 12, 2013, in Moffett Field, Calif. The Breakthrough Prize in Life Sciences recognizes excellence in research aimed at curing intractable diseases and extending human life. The prize is administered by the Breakthrough Prize in Life Sciences Foundation, a not-for-profit corporation dedicated to advancing breakthrough research, celebrating scientists and generating excitement about the pursuit of science as a career.
(AP Photo/Ben Margot)
CIA Director David Petraeus, center, stands with Admiral James A. Winnefeld, Vice Chairman of the Joint Chiefs of Staff, right, before a baseball game between the Washington Nationals and the Miami Marlins at Nationals Park Sunday, Sept. 9, 2012, in Washington.
(AP Photo/Alex Brandon)
This Aug. 17, 2012 photo shows CIA Director David Petraeus, second from right, and Maj. Gen. James McConville, right, during a ceremony at Fort Campbell, Ky.
(AP Photo/Mark Humphrey)
Director of the Central Intelligence Agency General David Petraeus attends the Allen & Co Media Conference in Sun Valley, Idaho July 12, 2012. Petraeus resigned as CIA director on November 9, 2012 he publicly admitted to having engaged in an extramarital affair. Picture taken July 12, 2012.
This Aug. 17, 2012 photo shows CIA Director David Petraeus, left, and his wife, Holly, during a ceremony at Fort Campbell, Ky.
(AP Photo/Mark Humphrey)
In this handout image provided by the International Security Assistance Force (ISAF), former Commander of International Security Assistance Force and U.S. Forces-Afghanistan; CIA Director Gen. Davis Petraeus shakes hands with biographer Paula Broadwell, co-author of 'All In: The Education of General David Petraeus' on July 13, 2011. CIA Director Gen. David Petraeus resigned from his post on November 9, 2012, citing an extra-marital affair with Paula Broadwell. The FBI began an investigation after it was tipped off by Jill Kelley, a long-time friend of the Petraeus family, who received threatening emails from Broadwell.
(Photo by ISAF via Getty Images)
In this Aug. 31, 2011 file photo, former Commander of International Security Assistance Force and U.S. Forces-Afghanistan Gen. Davis Petraeus, standing with his wife Holly, participates in an armed forces farewell tribute and retirement ceremony at Joint Base Myer-Henderson Hall in Arlington, Va. Gen. Petraeus, the retired four-star general who led the U.S. military campaigns in Iraq and Afghanistan, resigned Friday, Nov. 9, 2012 as director of the CIA after admitting he had an extramarital affair.
(AP Photo/Susan Walsh, File)
Jill Kelley, General David Petraeus, Holly Petraeus, Jill Kelley and Scott Kelley (l.- r.) attending event in which Gen. Petraeus was presented with community service award at the home of Jill and Scott Kelley during summer of 2011.
(New York Daily News Exclusive via Getty Images)
US General David Petraeus (2nd L) attends a meeting with German Chancellor Angela Merkel, German Defence Minister Karl Theodor zu Guttenberg and Afghan President Hamid Karsai (not in picture) during an unannounced visit to the German Army's base in the Afghan city of Masar-i-Sharif on December 18, 2010.
(STEFFEN KUGLER/AFP/Getty Images)
US President Barack Obama walks off Air Force One upon landing for an unscheduled visit to Bagram Air Base in Afghanistan December 3, 2010, and is greeted by US commander in Afghanistan General David Petraeus and US Ambassador to Afghanistan Karl W. Eikenberry (behind).
(JIM WATSON/AFP/Getty Images)
U.S Army General David Petraeus, commander of the Multi-National Force in Iraq, testifies before the Senate Foreign Relations Committee in Washington, D.C., U.S., on Tuesday, April 8, 2008. Petraeus said progress in Iraq is too "fragile and reversible'' to allow for U.S. troop levels to fall below about 140,000 earlier than September.
(Photo by Brendan Smialowski/Bloomberg via Getty Images)
US Army General David Petraeus, incoming commander of US Central Command and former commanding general of the Multi-National Force in Iraq, interacts with other guest riders after returning to the White House following a bicycle ride with US President George W. Bush, in Washington, October 11, 2008.
U.S. Army General David Petraeus throws out the first pitch prior to Game 2 of Major League Baseball's World Series between the Tampa Bay Rays and Philadelphia Phillies in St. Petersburg, Florida, October 23, 2008.
U.S. Senator Barack Obama (D-IL) listens as U.S. Army Gen. David H. Petraeus provides a situation update on Iraq to a congressional delegation in Baghdad, July 21, 2008. Obama and other members of the delegation met with Iraqi leaders and U.S. military commanders in a visit overshadowed by the question of when U.S. troops should go home.
(REUTERS/Lorie Jewell/Multi-National Forces Iraq Public Affairs/Handout)
Gen. David Petraeus, the top commander for U.S. troops in Iraq, appears at a graduation ceremony for 700 Iraqi National Police cadets in Baghdad, Iraq, on Tuesday, Dec. 18, 2007.
(AP Photo/Khalid Mohammed)
U.S. Commander in Iraq, Gen. David Petraeus wearing a military helmet gives a gift to a Iraqi child a soccer ball which reads" General David Petraeus" during his visit at the village of Jadihah northeast of Baghdad, Iraq, on Thursday, Oct. 11, 2007. Despite Petraeus have listened from people that the security has improved dramatically he has a new, if more distant, problem nagging at his mind and that is Turkey's threat to cross into Iraq to chase Kurdish militants. "We're very worried about that," he said.
(AP Photo/Khalid Mohammed )
U.S. President George W. Bush speaks to reporters following a meeting on the war in Iraq at the White House in Washington October 5, 2005. Standing with Bush are the former commander of the multi-national security and transition command U.S. Army Major General David H. Petraeus (L) and U.S. Secretary of Defense Donald Rumsfeld.
General David Petraeus, the three-star U.S. General charged with overseeing the transition of power from the Coalition military authorities to the Iraqis poses June 21, 2004 in Najaf, Iraq.
(Photo by Brent Stirton/Getty Images)
U.S. Lt. General David Petraeus, commander of the 101st. Airborne Division shakes hands with an Iraqi Army soldier celebrating his graduation in Kirkush Military Training base, July 8, 2004. Columns of 720 soldiers of the newly U.S-trained Iraqi Army celebrated their graduation on Thursday as part of U.S initial plan of creating a new Iraqi army division numbering 12,000 troops within a year to replace 400,000-strong army dispended by the U.S led coalition authority after the fall of Baghdad on April 2003.
(Zohra Bensemra / Reuters)
Paul Bremer (L), the the U.S. administrator for Iraq listens to US Commander Maj. Gen. David Petraeus upon his arrival at Mosul airport in northern Iraq before a short helicopter tour of the city 18 May 2003. The U.S. administrator for Iraq, Paul Bremer, said on Sunday he was pushing ahead with setting up an Iraqi interim authority, denying media reports that Washington was suspending the transition process.
(REUTERS/Roberto Schmidt/POOL JV)
In this handout photo from the U.S. Army, Maj. Gen. David H. Petraeus, commander of the 101st Airborne Division (Air Assault), speaks during the 716th Military Police Battalion during a assumption of command ceremony November 2, 2003 in Babylon, Iraq. Lt. Col. Ashton L. Hayes took command of the battalion after former commander Lt. Col. Kim S. Orlando was killed Oct. 16 in Karbala, Iraq.
(Photo by Chris Jones/U.S. Army via Getty Images)
Major General David Petraeus, commander of the U.S. Army's 101st Airborne division meets with local Kurd and Arab leaders July 26, 2003 in the ethnically mixed town of Domiz, in northern Iraq. Petraeus was the guest of honor at a dinner hosted by the leaders and participated in a ribbon cutting ceremony for a new hospital clinic built with the aid of the U.S. Army there.
(Photo by Scott Nelson/Getty Images)
David H. Petraeus got a diploma from the U.S. Military Academy and the boss's daughter as well. The cadet captain and assistant brigade adjutant, who comes from Cornwall-On-The-Hudson, New York, is to marry Holly Knowlton, daughter of West Point Superintendent Lt. General William Knowlton.