Viewers should be primed to tune in to the debate at 9 p.m. ET. The event, taking place at Philadelphia's National Constitution Center, will last 90 minutes, and is hosted by ABC and moderated by ABC World News Tonight host David Muir and anchor Linsey Davis.

President Trump and Environmental Protection Agency Administrator Lee Zeldin were expected to announce plans Thursday to repeal the landmark 2009 legal finding that climate change poses a threat

Follow live updates on President Trump and national politics for the latest news, analysis and more from Washington.

President Trump on Thursday morning will give a speech at the National Prayer Breakfast, an event that brings together a bipartisan coalition of politicians and other U.S. and international leaders.

The Department of Homeland Security (DHS) is gearing up for a shutdown after Senate Democrats on Thursday blocked bills that would keep the lights on. Senators left Washington without a deal, showing just how far apart Democrats and White House negotiators are on a potential agreement to reform Immigration and Customs Enforcement (ICE) after