A federal judge on Wednesday permanently barred President Donald Trumps administration from implementing most of his first executive order on elections, part of which sought to require people to show documentary proof of citizen ship when they register to vote.The ruling by U.S. District Court Judge Denise Casper in Boston effectively converts a preliminary injunction she issued a year ago, in which she temporarily blocked many of Trumps efforts to overhaul elections, into a permanent ban.RELATED STORY | Trump delays housing bill signing, demands SAVE America Act pass firstCasper rejected the administrations argument that the lawsuit to block the changes brought by Democratic state attorneys general was premature because the rules had yet to be implemented. Instead, she agreed that the Constitution gives states and Congress the authority to regulate elections, and that Trumps requirements violated the separation of powers.RELATED STORY | Judge blocks use of federal tool to check voter citizenship status(The Constitution) does not grant the President any specific powers over elections, she wrote.Among other proposed changes, Trumps order would have required people to provide documentary proof of citizenship when registering to vote, prevented mail ballots from being counted if they arrive after Election Day, even if they were postmarked by then, and punished states that failed to comply by withholding certain federal money. ...read more read less