Newly obtained congressional data shows hundreds of terror plots have been stopped in the U.S. since 9/11 – mostly involving foreign-born suspects, including dozens of refugees. The files are sure to inflame the debate over the Obama administration’s push to admit thousands more refugees from Syria and elsewhere, a proposal Donald Trump has vehemently opposed on the 2016 campaign trail.

“[T]hese data make clear that the United States not only lacks the ability to properly screen individuals prior to their arrival, but also that our nation has an unprecedented assimilation problem,” Sens. Jeff Sessions, R-Ala., and Ted Cruz, R-Texas, told President Obama in a June 14 letter, obtained by FULL REPORT