An arrest by the F.B.I. comes as the Trump administration has promised to crack down on Chinese academics.

In a meeting with FEMA staff, David Richardson said he was unaware the United States had a hurricane season. Two staff members said it was unclear if he was serious, but the agency said he was joking.

Administration officials have either violated orders or used an array of obfuscations and delays to prevent federal judges from deciding whether violations took place.

It is not clear whether the chief judge now handling the case at Guantánamo Bay is serving as a caretaker or will hold hearings this summer.

The question of whether Donald Trump cost conservatives a more decisive victory is a useful one to consider.

The Make America Healthy Again movement associated with Health Secretary Robert F. Kennedy Jr. is changing social media for parents. Emma Goldberg, a business writer covering societal change for The New York Times, talks with a mom about how MAHA ideas are resonating.

The attack demonstrated Ukraine’s ability to use relatively cheap drones to take out expensive aircraft and to strike sites far from its borders.

A Trump administration memo issued to border and customs officials in March further curtailed efforts to ensure a more diverse work force.

The Justice Department opened an investigation into the student-run Harvard Law Review. The startling accusations show how the Trump administration is wielding power in pursuit of its political agenda.

Harvard officials, in a new court filing on Monday, detailed the extent of cuts that the Trump administration had made to a broad swath of university research projects.

The agency plans to hire more than 100 people after nearly 600 were laid off or retired as part of the governmentwide cuts this year.

The president made no reference to Jews after the Colorado attack.

The Alaska Republican senator has no qualms about criticizing the president. She could play a make-or-break role in pushing back on the legislation carrying his agenda.

J.D. Scholten, a state representative who is also a minor-league baseball pitcher, said he had felt compelled to take on Senator Joni Ernst, a Republican, after her defense of Medicaid cuts.

The president is set to raise tariffs on steel and aluminum this week, even as the courts are challenging the legitimacy of other levies.

Right-wing insiders, caviar bumps and protests at Butterworth’s, a new Capitol Hill restaurant.

The justices added four cases to their docket for next term, including a lawsuit brought by a conservative group challenging an Illinois law that allows mail ballots to be counted after Election Day.

Coming June 5: A six-part podcast exploring the origins of medical treatment for transgender young people, and how the care got pulled into a political fight that could end it in the United States.

From bee science to understanding the impact of a warming world on plant life, here’s what the Ecosystems Mission Area does.