Biden Administration Adopts Rules to Guide A.I.’s Global Spread

New rules aim to keep advanced technology out of China and to ensure that cutting-edge artificial intelligence is developed by the United States and its allies.

Trump’s Inaugural Celebration Will Kick Off at His Golf Club in Virginia

The president-elect is set to arrive in the Washington area on Saturday and begin a series of events that includes a party at Trump National Golf Club and a rally at Capital One Arena.

Confirmation Hearings Open in a Test of Trump’s Hold on Senate G.O.P.

Opposition to prospective nominees, along with time-consuming Senate rules, will slow floor action despite the Republican push for approval of some of President-elect Donald J. Trump’s picks as soon as Jan. 20.

Trump Discusses Tax Cuts for New Yorkers With G.O.P. Lawmakers

The president-elect told Republicans from New York, New Jersey and California to come up with a plan for increasing the state and local tax deduction — a move that would benefit their constituents.

Inside Elon Musk’s Plan for DOGE to Slash Government Costs

Mr. Musk has turned to Silicon Valley to help recruit executives who will take up unofficial positions across the federal government.

Kristi Noem Sent Troops to Border, but Not to Flood Victims in South Dakota

President-elect Donald J. Trump picked the South Dakota governor to head the Homeland Security Department, which includes the Federal Emergency Management Agency.

Kamala Harris Shares a Trump-less Photo of Presidents at Jimmy Carter’s Funeral

Pictures shared on social media by the vice president and by the Carter Center prominently showed other past presidents in attendance.

Jack Smith, Who Led Prosecutions of Trump, Resigns

Mr. Smith, a special counsel appointed by Attorney General Merrick B. Garland, had signaled that he would step down before Donald J. Trump’s inauguration.