Rep. Ilhan Omar under investigation by Jeanine Pirro's office

U.S. Attorney Jeanine Pirro said her office is probing Rep. Ilhan Omar's (D-Minn.) financial disclosures, the day after federal agents searched the congresswoman's Washington, D.C. home.

The big picture: It's another example of the administration's escalating fight with the progressive lawmaker, who has clashed with the White House over its immigration crackdown — and whom President Trump has labeled as "crooked."