Senator Jeanne Shaheen of New Hampshire will not run for re-election in 2026, bringing an end to a long and singular political career and further complicating Democrats’ efforts to regain a majority in the Senate. Her decision not to seek a fourth term will immediately set off a high-stakes race in a state whose voters…

A Republican lawmaker abruptly adjourned a congressional hearing on Tuesday after being challenged for referring to Representative Sarah McBride, Democrat of Delaware and the first openly transgender lawmaker in Congress, as a man. The Europe Subcommittee of the House Foreign Affairs panel was in the middle of a hearing on arms control and U.S. assistance…

The Education Department announced on Tuesday that it was firing more than 1,300 workers, effectively gutting the agency that manages federal loans for college, tracks student achievement and enforces civil rights laws in schools. The layoffs mean that the department, which started the year with 4,133 employees, will now have a work force of about…

As hundreds of demonstrators made their way through Lower Manhattan on Tuesday to protest the detention of a prominent pro-Palestinian activist at Columbia University, the White House defended the arrest and rebuked the school for what it called lack of cooperation. The activist, Mahmoud Khalil, was a leader of student protests on Columbia’s campus and…

The U.S. power grid added more capacity from solar energy in 2024 than from any other source in a single year in more than two decades, according to a new industry report released on Tuesday. The data was released a day after the new U.S. energy secretary, Chris Wright, strongly criticized solar and wind energy…

The arrest of a former Columbia University graduate student who gained prominence amid that campus’s pro-Palestinian demonstrations has divided the American Jewish community, which finds itself trying to reconcile a longstanding focus on Jewish safety and support for Israel with a historical commitment to civil liberties. Immigration authorities’ detention of the activist, Mahmoud Khalil, a…

Mark Carney, Canada’s soon-to-be prime minister, weathered two era-defining implosions in his career as a central banker: the 2008 global financial crisis and Brexit. He has dealt with political chaos, societal upheaval and economic meltdown. Now he faces what is arguably the challenge of a lifetime: Donald J. Trump. Can Mr. Carney negotiate with Mr.…

The Justice Department’s pardon attorney was dismissed a day after she refused to recommend that the actor Mel Gibson, a prominent supporter of President Trump’s, should have his gun rights restored, according to the attorney and others familiar with the situation. Elizabeth G. Oyer, the former pardon attorney, described the sequence of events as an…

Ukrainian forces have stalled the Russian offensive in the eastern Donetsk region in recent months and have started to win back small patches of land, according to Ukrainian soldiers and military analysts. Russia still holds the initiative, and conducts dozens of assaults across the eastern front every day, the soldiers and analysts say. But after…

Beth Crowell was proud to work for the Internal Revenue Service. She had spent much of her career as an accountant for large corporations, gaining intimate knowledge about how they do — and sometimes don’t — pay the taxes they owe. Working for the I.R.S. in Colorado, she hoped to put her skills to a…