Rep. Paul Gosar (R-Ariz.), an immigration hardliner, announced this afternoon that he has asked the U.S. Capitol Police and Attorney General Jeff Sessions to check the identification of all State of the Union attendees and arrest any illegal immigrants.

Of all the places where the Rule of Law needs to be enforced, it should be in the hallowed halls of Congress. Any illegal aliens attempting to go through security, under any pretext of invitation or otherwise, should be arrested and deported.

— Rep. Paul Gosar

Why it matters: At least 27 members of Congress plan to bring immigrants with DACA or Temporary Protected Status as their guests to Trump's address, per CNN.