Twitter tried to correct Trump's falsehoods about vote by mail, but the platform's first fact-check on the president's tweets was itself misleading

· For the first time on Tuesday, Twitter rolled out a feature to flag Trump's tweets about voting by mail as misleading in an effort to provide more context and fact-check them. 
· The platform added a "get the facts about mail-in ballots" banner below Trump tweets falsely claiming that mail ballots in California will be...