From Reuters:

Plans by President Barack Obama's administration to allow thousands more refugees into the United States faced stiff opposition on Monday in the U.S. Congress, where Republican lawmakers demanded the right to review, and reject, the effort, citing fears of terrorism.

Secretary of State John Kerry on Sunday announced an increase in the number of refugees the country takes in by 15,000 in each of the next two years, bringing the total to 100,000 by 2017. . . .

Lawmakers worry that Islamic State fighters could pose as refugees in order to sneak into the United States or western Europe.

Republican Senators Shelley Moore Capito, Mark Kirk, Joni Ernest, Mike Rounds and Roger Wicker, as well as Democratic Senator Joe Manchin, wrote to Kerry and Jeh Johnson, Obama's Secretary of Homeland Security, last week, expressing their concerns and urging Washington to tightly screen any refugees.