Senator Mark Kelly Urges Continued U.S. Support After Visiting Ukraine. Musk Calls Him a ‘Traitor.’

Senator Mark Kelly, an Arizona Democrat and former astronaut, visited Ukraine over the weekend and said the United States could not give up on the people there as they fight Russia. Musk responded on X.

What We Know About the Month-Old Migrant Mission at Guantánamo Bay

President Trump said the base would house as many as 30,000 migrants awaiting deportation. But construction of a tent city was halted weeks ago.

U.S. Energy Secretary Pledges to Reverse Focus on Climate Change

To applause from oil and gas executives, Chris Wright said natural gas was preferable to renewable energy and climate change was a “side effect of building the modern world.”

Top Law Firm Targeted by Trump Over Clinton Campaign Work Hires Counsel

President Trump stripped Perkins Coie of access to federal buildings and personnel, citing its work for Hillary Clinton’s 2016 campaign. The firm hired Williams & Connolly, which is skilled in fighting the government, to represent it.

Trump, With More Honey Than Vinegar, Cements an Iron Grip on Republicans

In his second term, President Trump is cultivating warm relationships with G.O.P. lawmakers — and using the implicit threat of ruining them if they stray — to keep them in line behind his agenda.