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The U.S. Central Command said the blockade would be "enforced impartially against vessels of all nations" from 10 a.m. EDT, following the breakdown of talks after 21 hours of negotiations.

A long-term study of the world's largest known community of chimpanzees has documented a rare event: what the researchers describe as the primate equivalent of a "civil war."

Last year, Congress approved $75 billion for immigration enforcement. That money has allowed ICE to operate nearly unfettered during a record-long shutdown of the Department of Homeland Security.

As one Vermont college finishes its last semester, an estimated 442 others may be in trouble.

The year began with many people becoming U.S. citizens, but by December, fewer people were doing so, driven by ramped-up scrutiny of applications and eroding trust in the system.

Federal regulators want airlines to cut the number of flights at O'Hare Airport in Chicago this summer. It's an unusual move, sparked by a turf war between two major airlines with hubs at the airport.

Wellness influencers tout the therapy's power for everything from rejuvenating skin and hair to boosting longevity. Devices sold for at-home use abound. We look at the evidence behind the hype.

The U.S. military said Sunday that it blew up two boats accused of smuggling drugs in the eastern Pacific Ocean, as the Trump administration pursues its campaign against alleged traffickers in Latin America.

Rory McIlroy goes back-to-back at the Masters to join Jack Nicklaus, Nick Faldo and Tiger Woods.

A stampede at a mountaintop fortress popular with tourists in northern Haiti has killed at least 25 people and injured dozens of others, authorities said.