WASHINGTON (AP) — House Speaker Paul Ryan called Tuesday for a "pause" in Syrian refugees coming to the U.S. in the wake of the Paris attacks, and assembled a task force to bring legislation to a vote as soon as this week.

"Our nation has always been welcoming but we cannot let terrorists take advantage of our compassion," Ryan, R-Wis., told reporters after a closed-door House GOP meeting. "This is a moment where it's better to be safe than to be sorry, 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."

Republicans said the chairmen of national security-focused committees were working on legislation dealing with Syrian refugees that the House could vote on as early as Thursday, though it was not clear exactly what the legislation would involve. Thus far the numbers of Syrian refugees admitted to the U.S. from their war-torn homeland have been extremely limited and they are vetted in a lengthy process. Some Democrats denounced a rush to judgment on Capitol Hill and the presidential campaign trail.

Rep. Luis Gutierrez of Illinois likened the GOP reaction to the U.S. government turning away Jews fleeing Nazi Germany and placing Japanese in internment camps during World War II.

"Let us as legislators rise above petty politics, rise above sectarian fears ... the underlying layer of xenophobia," Gutierrez said on the House floor. "Let us maintain America's commitment as a beacon of hope."

The U.S. has admitted fewer than 2,200 Syrian refugees since Oct. 1, 2011, but Obama administration officials want to admit 10,000 more this year. They announced that goal earlier this fall after a photograph of a little Syrian boy washed up on a beach sparked calls for compassion, including from some congressional Republicans.

Thus far the administration has not backed off the goal, insisting vetting is good. But pressure is mounting following Friday's brutal attacks in Paris. The Islamic State group claimed responsibility and there were indications that one of the perpetrators might have entered France with a Syrian passport, potentially amid waves of refugees seeking haven in Europe.

GOP congressional aides said lawmakers are getting swamped by calls from constituents demanding action to ensure the U.S. is protected from such threats. The issue has emerged as a test for Ryan just weeks after he was sworn in as the new House speaker.

"Even amongst the most pro-immigration wings of the Republican Party there is a sense that national security absolutely has to come first," Republican Rep. Mick Mulvaney of South Carolina said after leaving Tuesday morning's GOP meeting. "So we're trying hard not to overreact. But at the same time if there's a threat to national security that has to take priority."

Similar calls are coming from presidential candidates, and a number of GOP governors have announced plans to try to keep out Syrian refugees, though there authority to do so may be limited.

Even some Republicans who previously supported accepting more refugees are joining the call to clamp down. Sen. Lindsey Graham of South Carolina, GOP candidate for president, was one of those. On Monday he called for a "timeout" in such admissions.

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Associated Press writers Deb Riechmann and Alan Fram contributed to this report.