President Donald Trump on Friday threatened to strip Maine of its federal funding if it refuses to comply with his executive order banning transgender women from competing in women’s sports, marking the White House’s latest front in the nation’s culture wars.

The back-and-forth came in the middle of the president’s remarks welcoming the nation’s governors to the White House.

The state’s first female governor and first female district attorney, the longtime Democratic politician has a history of supporting law enforcement.