Republicans in the U.S. House of Representatives challenged President Barack Obama on Tuesday to get tougher with Islamic State militants and promised to develop legislation quickly to suspend resettlement of Syrians in the United States.
"ISIS showed they are committing an act of war against the West," House Speaker Paul Ryan told reporters after a closed-door meeting of House Republican lawmakers, using a common acronym for the militant group.
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General migrant crisis - Syrian refugees, entering all European countries
Republicans want tougher response to ISIS 'war'
Migrant and refugee children lie on the ground during a demonstration to protest against Turkish police blocking the access to the road and the ticket office for the Turkey-Greece border towns on September 15, 2015 at Istanbul's Esenler Bus Terminal. Over half a million migrants have crossed the European Union's border so far this year, up from 280,000 in 2014, the bloc's Frontex border agency said on September 15, 2015 -- but warned some people may have been counted twice. AFP PHOTO / YASIN AKGUL (Photo credit should read YASIN AKGUL/AFP/Getty Images)
ROSZKE, HUNGARY - SEPTEMBER 13: A young boy wraps up to keep warm as migrants wake up to a cold morning at the Hungarian border with Serbia on September 13, 2015 in Roszke, Hungary. A record number of 4,000 people crossed the Hungarian border with Serbia yesterday. Migrants are rushing to the border due to fears that the borders will soon close before the official closure of midnight on Monday, September 14th. Since the beginning of 2015 the number of migrants using the so-called 'Balkans route' has exploded with migrants arriving in Greece from Turkey and then travelling on through Macedonia and Serbia before entering the EU via Hungary. The number of people leaving their homes in war torn countries such as Syria, marks the largest migration of people since World War II. (Photo by Christopher Furlong/Getty Images)
SANLIURFA, TURKEY - OCTOBER 28: (TURKEY OUT) Kurdish refugee children from the Syrian town of Kobani look on near makeshift tents in a camp in the southeastern town of Suruc, Sanliurfa province October 28, 2014. Kurdish fighters, supported by US-led air strikes, have fended off the Islamic State militants offensive into the besieged Syrian border town of Kobani for the last 44 days but remain ill equipped and short on ammunition. (Photo by Kutluhan Cucel/Getty Images)
ALEPPO, SYRIA - JULY 02: Mother of Syrian child refugee 8-year-old Ahmet Kedru, with partial thickness burns on the face, Aisha Kedru weeps as her son demands support for an aesthetic surgery from Turkish doctors to return to the old days on July 02, 2015 in Aleppo's district Azaz. When Ahmet and his family members were inside of a tent that they take shelter in at Azaz district, the tent is burned out. Fire damaged both him and his mother. (Photo by Kerem Kocalar/Anadolu Agency/Getty Images)
Syrian refugees wait for transportation after crossing into Turkey from the Syrian town of Tal Abyad, near Akcakale in Sanliurfa province, on June 10, 2015. Thousands of people crossed from Syria into Turkey on June 10 to flee a battle pitting Islamist insurgents against Kurdish and opposition forces for the Syrian border town of Tel Abyad. AFP PHOTO/STR (Photo credit should read STR/AFP/Getty Images)
SANLIURFA, TURKEY - JUNE 06: A Turkish soldier carries a Syrian girl as she crosses into Turkey with her family from the borderline in Akcakale district of Sanliurfa on June 06, 2015. Hundreds of Syrians who fled from Syria after clashes between Syrian government forces and opponents in Rasulayn region of Al-Hasakah, have crossed into Turkey since Wednesday. (Photo by Halil Fidan/Anadolu Agency/Getty Images)
A Syrian refugee woman sits as a child sleeps near her early in the morning on Taksim Square, Istanbul, on May 26, 2015. Britain's David Cameron and Russia's Vladimir Putin have agreed to re-start talks on finding a solution to the crisis in Syria, a statement from Cameron said on May 25. AFP PHOTO/BULENT KILIC (Photo credit should read BULENT KILIC/AFP/Getty Images)
A Syrian Kurdish boy peers as children take lessons on November 10, 2014 in a makeshift school tent in a refugee camp in the town of Suruc, Sanliurfa province. Turkey's maintained an 'open door' policy for all those fleeing Syria's civil war and there are now over 1.5 million Syrian refugees living in the country. More than 280,000 Syrian refugees are living in refugee camps, mostly in the southeast, according Turkey's Disaster and Emergency Management Authority (AFAD). AFP PHOTO / ARIS MESSINI (Photo credit should read ARIS MESSINIS/AFP/Getty Images)
Kurdish people watch the Syrian town of Kobane, also known as Ain al-Arab, from the Turkish border in the southeastern village of Mursitpinar, Sanliurfa province, on October 18, 2014. Turkey is turning a deaf ear to insistent pressure to take a more pro-active stance in the fight against Islamic State (IS) jihadists, adding to existing strains with the West under President Recep Tayyip Erdogan. Western diplomats have repeatedly made clear they want to see the key NATO member play a key role in the coalition against the militants, who are battling for the Syrian town Kobane just a few kilometers from Turkey. AFP PHOTO / ARIS MESSINIS (Photo credit should read ARIS MESSINIS/AFP/Getty Images)
A child cries as Syrian Kurdish people arrive after crossing the border between Syria and Turkey after several mortars hit both side in the southeastern town of Suruc, in the Sanliurfa province on September 29, 2014. Tens of thousands of Syrian Kurds flooded into Turkey fleeing an onslaught by the Islamic State (IS) group that prompted an appeal for international intervention. Some of the refugee now want to return to protect their homes and join the fight against IS militants. AFP PHOTO/BULENT KILIC (Photo credit should read BULENT KILIC/AFP/Getty Images)
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Ryan said party leaders had assembled a task force to consider legislation "as quickly as possible" that would suspend at least temporarily Obama's plan to admit 10,000 Syrian refugees to the United States.
"This is a moment where it is better to be safe than sorry."
Paul Ryan, House Speaker
"So we think the prudent, the responsible thing is to take a pause in this particular aspect of this refugee program in order to verify that terrorists are not trying to infiltrate the refugee population," Ryan said.
Several Republicans said they wanted a vote on such legislation as soon as this week.
I'm delighted to see @SpeakerRyan say we need to put a pause on accepting #SyrianRefugees, good for him. This is about national security.
The attacks in Paris on Friday which killed 129 people have prompted calls from many U.S. lawmakers, mostly Republicans, to bar all Syrians from entering the country. Immigration, like the threat of terrorism, has been a hot-button issue in the 2016 U.S. presidential election.
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In Paris, France's President Francois Hollande told a joint session of parliament "France is at war" after the attacks.
Arguing that the attacks had proven they pose too much of a threat to the United States, a few U.S. lawmakers want to include a provision to block them in a spending bill that must pass by Dec. 11 to prevent a government shutdown.
Several state governors, most Republicans, also vowed on Monday to refuse the resettlement of any Syrians in their states.