In advance of the release of Congress’ year-end spending package, the office of Sen. Jeff Sessions is highlighting some terrorists who were recently granted access to the U.S. through the nation’s immigration system.

In an email to reporters Tuesday, a Sessions aide listed more than 30 examples of immigrants admitted to the U.S. who were recently implicated in terrorist activities.

Sessions, the chairman of the Subcommittee on Immigration and the National Interest, and other conservative lawmakers have warned against passing a spending bill that does not place limitations on admissions — in particular refugee admission — to the U.S.

“Congress must cancel the President’s blank refugee check and put Congress back in charge of the program. We cannot allow the President to unilaterally decide how many refugees he wishes to admit, nor continue to force taxpayers to pick up the tab for the tens of billions of unpaid-for welfare and entitlement costs,” Sessions and Sen. Richard Shelby (R-AL), the chairman of the Commerce, Justice, and Science Appropriations subcommittee, said in a joint statement last week.

The pair added that passing the spending deal without limiting language “would put the U.S. on a path to approve admission for hundreds of thousands of migrants from a broad range of countries with jihadists movements over the next 12 months, on top of all the other autopilot annual immigration – absent language to reduce the numbers.”

The Sessions aide noted that the 30 examples are listed represented just a “partial” inventory of recently implicated terrorist migrants.

Read the list: