Ahead of President Joe Biden’s unprecedented speech Monday night at the Democratic National Convention, former Democratic House Speaker Nancy Pelosi explained her reasoning in helping push him out of the presidential race, saying she “took a punch for the children.” Biden, 81, in May awarded Pelosi, 84, the Presidential Medal of Freedom and called her the “greatest speaker of the House of Representatives in history.” But after a disastrous debate performance in June against former President Donald Trump, Pelosi pushed Biden to exit the race. According to a New York Times report last week, the …