 ABC News has confirmed that the Biden campaign is now conducting head-to-head polling of Harris and Donald Trump. Tonight, after the NATO summit wraps in Washington, D.C., President Biden will hold a solo news conference, his first in months. Western states remain locked in triple-digit temperatures for a second week. It's led to several confirmed deaths in California, and Santa Clara officials say they expect that death toll to climb. I'm Michelle Franzen, ABC News.