 ABC News. I'm Sherry Preston. NATO leaders are gathering in Washington as the alliance marks 75 years since its formation. Heads of state from Europe and North America all taking part in meetings. Tonight, there is a dinner on Thursday. President Biden will hold a press conference. A lot of people will be watching that. House and Senate Democrats are meeting today to discuss further whether they think the president should step aside instead of seeking another term. ABC's Mary Bruce has more on the pushback, however, by the White House.