Nearly 15,000 health care workers in New York have been off the job since last week in a labor action affecting some of the city’s major hospitals.

Dr. Kirk Milhoan, a pediatric cardiologist who leads the Advisory Committee on Immunization Practices, said a person’s right to refuse a vaccine outweighed concerns about illness or death from infectious diseases.

Just outside Minneapolis, the Whipple Building houses offices, a detention center and a courthouse — and has become the home base for immigration agents and protesters alike.

Events are being propelled by one man’s damaged psyche.

The president appeared to be lashing out in response to stark, high-profile remarks by Prime Minister Mark Carney of Canada that rejected Mr. Trump’s efforts to dismantle the international order.

Senator Bill Cassidy of Louisiana, a physician, reluctantly voted to confirm Robert F. Kennedy Jr. as health secretary. It didn’t appease President Trump.

Caitlin Dickerson, an immigration reporter, explains the different pieces of Trump’s deportation machine.

Managers of electric grids say freezing temperatures and ice and snow could lead to power outages in many places, potentially leaving millions in the dark.

We explain what you can expect in the winter weather this week.

The New York Times ran the image through an A.I. detection system and concluded that it showed signs of manipulation.

Witness testimony and videos from Tehran’s largest cemetery show disrespectful treatment of the dead after a brutal government crackdown.

The influx of federal agents this week has been hard for locals to ignore. Many are expressing their resistance to the immigration crackdown.

A crackdown on problems with fairness and safety is achieving results, including a big drop in the number of sick patients being passed over for transplants.

Two of the Democrats’ rising stars, Jasmine Crockett and James Talarico, are seeing if a red state should be won courting disaffected Republicans or focusing on the party’s base.

As his character assumes the lead in a new season, Luke Thompson is bringing Shakespearean depth to one of the buzziest streaming shows of our time.

The popular short form video app has a new corporate structure in the United States, which could result in some changes for the 200 million Americans who use TikTok.

In his remarks, the former special counsel repeatedly denied that he had acted out of partisan animus and bemoaned the Trump administration’s efforts to go after the president’s perceived enemies.

Ryan Wedding rose to fame as a Canadian Olympic athlete, but the authorities say he became one of the world’s biggest drug lords, who ordered an informant executed.