Iowa Sen. Joni Ernst said Republicans would waste no time trying to impeach Joe Biden if he wins the White House. “I think this door of impeachable whatever has been opened,” Ernst toldBloomberg News on Sunday. “Joe Biden should be very careful what he’s asking for because, you know, we can have a situation where if it should ever be President Biden, that immediately, people, right the day after he would be elected would be saying, ‘Well, we’re going to impeach him.’” Ernst, 49, said Biden, 77, would be impeached “for being assigned to take on Ukrainian corruption yet turning...