Washington — President Trump signed an executive order Tuesday requiring states to impose stricter mail-in voting rules and directing his administration to create a list of confirmed U.S. citizens who are eligible to vote in each state. The additional requirements, made without any action by Congress, are all but certain to face challenges in the courts. It's not clear whether or how the order will affect the midterm primary elections, which are already underway in many states. "The cheating on mail-in voting is legendary," the president said in the Oval Office ahead of the signing. He said requiring voters to...