A US judge on Thursday declined to block President Donald Trump’s executive tightening rules on mail-in voting in a loss for the Democratic Party, whose lawyers argued that it could disenfranchise millions of voters. The decision comes as Trump’s Republicans are locked in a tight battle to keep control of both houses of the US Congress in the November midterm elections. Trump has for years pushed the false claim that his 2020 election defeat was the result of widespread voter fraud and has...