Speaker Nancy Pelosi continued to stand firm Tuesday, insisting she will not stage a vote on the House floor to officially launch an impeachment inquiry into President Trump. Trump and his Republican allies have been pressuring Pelosi to hold a formal vote to begin the investigation — a move they believe would grant them more power and influence in the process, including the ability to call and subpoena their own witnesses. Last month, Pelosi formally launched an impeachment inquiry into Trump after months of resisting calls from her caucus to do so, but she has faced pressure to hold an...