Maine's governor, who has a long history of facing tough guys in the courtroom and in politics, finds herself in an unprecedented moment with the nation watching.

Who and what will he target next, and what will he do?” Maine Governor Janet Mills said. “In America, the President is neither a King nor a dictator, as much as this one tries to act like it – and it is the rule of law that prevents him from being so.

Leadership of the National Governors Association is weighing in on Friday's exchange between Gov. Janet Mills and President Donald Trump during an NGA event at the White House. During that exchange, Trump threatened to withhold federal funding from Maine because the state is continuing to allow transgender athletes to participate in girls and women's sports.