A judge in Massachusetts stopped President Trump's plan to change how people vote in the U.S. The judge agreed with some Democratic lawyers who said the plan was against the law. Trump wanted people to show they were citizens to vote. He also wanted to only count votes sent by mail if they arrived on Election Day. And he wanted to give money to states that followed these rules. The White House said this would make elections "fair and honest." But the judge, Denise J. Casper, said the states would probably win their case. She said the President does not have special power over elections in the Constitution. The judge also stopped the part of the plan that said states must not count votes sent by mail if they arrived after Election Day. This is the second time a judge has stopped parts of Trump’s election plan.