 Meanwhile, about 10 percent of the nation's population is under the National Weather Service's most severe heat warning as temperature records are under threat, especially in the West. President Biden campaigning in Pennsylvania. He was in Philadelphia where he called for unity among Democrats. But the week ahead will be significant as House Democratic Leader Hakeem Jeffries meeting with other ranking members today. The NATO summit takes place this week in Washington, D.C. Despicable Me 4 led the weekend box office. This is ABC News.