Michigan joins 18 other states to block Trump's election order, saying it violates the Constitution

Democratic officials in 19 states, including Michigan, filed a lawsuit against President Trump's attempt to reshape elections across the U.S., calling it an unconstitutional invasion of states' clear authority to run their own elections.

Thursday's lawsuit is the fourth against the executive order issued just a week ago. It seeks to block key aspects of it, including new requirements that people provide documentary proof of citizenship when registering to vote and a demand that all mail ballots be received by Election Day.

"The President has no power to do any of this," the state attorneys general wrote in court documents. "The Elections EO is unconstitutional, antidemocratic, and un-American."