President Donald Trump sparred with Maine's Democratic governor, Janet Mills, during a meeting of governors at the White House on Friday.

The Education Department on Friday launched a probe into Maine's transgender student sports participation policy after the president threatened the state's federal funding at a meeting of governors at the White House.

President Trump had a testy exchange with Maine Governor Janet Mills on Friday over his threat to withhold federal funding from the state unless it bans transgender athletes from competing in women’s and girls’ sports. “You better do it, because you’re not going to get any federal funding,” Trump told the Maine Democrat at a White House event.