(Reuters) - The father of an American soldier killed in Iraq who came under criticism last year from then-candidate Donald Trump said he has canceled a speaking engagement in Toronto after being notified that his U.S. travel privileges were under review.
Khizr Khan, an American citizen born in Pakistan, had planned to speak at a luncheon in Toronto on Tuesday in a discussion about President Trump's administration, according to Ramsay Talks, a speaker series based in Toronto hosted by Bob Ramsay.
Slain vet Humayun Khan and his family
Slain vet Humayun Khan and his family
Khizr Khan, whose son, Humayun S. M. Khan was one of 14 American Muslims who died serving in the U.S. Army in the 10 years after the 9/11 attacks, offers to loan his copy of the Constitution to Republican U.S. presidential nominee Donald Trump, as he speaks while a relative looks on during the last night of the Democratic National Convention in Philadelphia, Pennsylvania, U.S. July 28, 2016. REUTERS/Mike Segar
Captain Humayun Khan, died while serving his country in 2004.
(Photo credit Khizr M. Khan)
Khizr Khan walks off stage after speaking about his son US Army Captain Humayun Khan who was killed by a suicide bomber in Iraq 12 years ago, on the final night of the Democratic National Convention at the Wells Fargo Center, July 28, 2016 in Philadelphia, Pennsylvania. / AFP / Robyn Beck (Photo credit should read ROBYN BECK/AFP/Getty Images)
Khizr Khan, who's son Humayun (L) was killed serving in the U.S. Army, speaks at the Democratic National Convention in Philadelphia, Pennsylvania, U.S. July 28, 2016. REUTERS/Lucy Nicholson
Khizr Khan, father of Humayun S. M. Khan who was killed while serving in Iraq with the US Army, speaks during the fourth and final day of the Democratic National Convention at the Wells Fargo Center on July 28, 2016 in Philadelphia, Pennsylvania. / AFP / Nicholas Kamm (Photo credit should read NICHOLAS KAMM/AFP/Getty Images)
PHILADELPHIA, PA - JULY 28: Khizr Khan, father of deceased Muslim U.S. Soldier Humayun S. M. Khan, holds up a booklet of the US Constitution as he delivers remarks on the fourth day of the Democratic National Convention at the Wells Fargo Center, July 28, 2016 in Philadelphia, Pennsylvania. Democratic presidential candidate Hillary Clinton received the number of votes needed to secure the party's nomination. An estimated 50,000 people are expected in Philadelphia, including hundreds of protesters and members of the media. The four-day Democratic National Convention kicked off July 25. (Photo by Alex Wong/Getty Images)
Khizr Khan, whose son Humayun S. M. Khan was one of 14 US Muslims who died serving the United States in the ten years after 9/11 speaks during the final day of the 2016 Democratic National Convention on July 28, 2016, at the Wells Fargo Center in Philadelphia, Pennsylvania. / AFP / Robyn BECK (Photo credit should read ROBYN BECK/AFP/Getty Images)
Gold-Star father Khizr Khan, father of U.S. Army Captain Humayun Khan who was killed in 2004 in Iraq, puts his hand to his heart as he takes part in a discussion panel on the Muslim and refugee ban in the U.S. Capitol in Washington February 2, 2017. REUTERS/Kevin Lamarque
U.S. Democratic presidential nominee Hillary Clinton thanks Gold Star Father Khizr Khan after he spoke at a campaign rally in Manchester, New Hampshire, U.S., November 6, 2016. REUTERS/Lucas Jackson
Gold-star father Khizr Khan, father of U.S. Army Captain Humayun Khan who was killed in 2004 in Iraq, takes part in a discussion panel on the Muslim and Refugee ban in the U.S. Capitol in Washington, U.S., February 2, 2017. REUTERS/Kevin Lamarque
Gold Star father Khizr Khan speaks before introducing U.S. Democratic presidential nominee Hillary Clinton at a campaign rally in Manchester, New Hampshire, U.S., November 6, 2016. REUTERS/Lucas Jackson
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The organization said on its Facebook page on Monday that Khan, a U.S. citizen for over 30 years, was notified Sunday evening that his travel privileges were being reviewed.
Khan, in an accompanying statement, said he had not been given a reason as to why his travel privileges were being reviewed and apologized to ticket-holders for the cancellation. He declined to comment further in an email exchange with Reuters.
"This turn of events is not just of deep concern to me but to all my fellow Americans who cherish our freedom to travel abroad," Khan said in the statement included in the Facebook post. "I am grateful for your support and look forward to visiting Toronto in the near future."
It was unclear who called for the review or the grounds for it.
U.S. Customs & Border Protection said it does not contact travelers in advance of their travel out of the United States, according to an official who said any U.S. citizen with a passport may travel out of the country. CBP would not comment specifically on the Khan case, citing privacy protections.
Trump signed a revised executive order on Monday banning citizens from six Muslim-majority nations from traveling to the United States, but Pakistan is not one of those countries and the ban does not apply to U.S. citizens or legal permanent U.S. residents.
"Mr. Khan will not be traveling to Toronto on March 7th to speak about tolerance, understanding, unity and the rule of law," said Ramsay Talks, which announced guests would be refunded the ticket price of $89.
"This turn of events is not just of deep concern to me but to all my fellow Americans who cherish our freedom to travel abroad."
Khan and his wife, Ghazala Khan, appeared at the Democratic National Convention in support of presidential candidate Hillary Clinton and shared the story of their son, U.S. Army Captain Humayun Khan, who was killed during the Iraq war.
During his speech, he asked Trump if he had ever read the U.S. Constitution and said that he would gladly lend him his copy. He urged Trump to "look for the words liberty and equal protection of law" in the document.
Trump responded by questioning whether Clinton's aides scripted Khan's speech and questioned whether Ghazala Khan was allowed to speak.
Khan and Trump went on to exchange further criticism, dominating the presidential campaign for several days over the summer.
(Additional reporting by Anna Mehler Paperny and Alastair Sharp in Toronto; Editing by Daniel Trotta and MAry Milliken)