With the welcome mat withdrawn for promising researchers from around the world, America is at risk of losing its longstanding pre-eminence in the sciences.

Some former spy-hunters see the State Department’s plan to revoke visas of some Chinese college students as heavy-handed and counterproductive.

A federal appeals panel ordered officials not to deport a 31-year-old to El Salvador. Minutes later, it happened anyway. The government blamed “administrative errors.”

The Times’s chief fashion critic unravels the Trump-inspired style that has spread quickly across Washington.

President Trump made the announcement at a U.S. Steel factory outside Pittsburgh.

As Mr. Musk entered President Trump’s orbit, his private life grew increasingly tumultuous and his drug use was more intense than previously known.

Meteorologists and climate researchers aim to run a livestream for 100 hours in protest of the Trump administration’s cuts to weather and climate research.

President Trump gave Elon Musk a send-off in the Oval Office.

The president has grown increasingly angry at court rulings blocking parts of his agenda, including by judges he appointed.

Mr. Musk, who says he will devote more time to his private companies, never came close to achieving his goal of cutting $1 trillion from the federal budget.

The list of possible suspects seemed long.

An Oval Office news conference signaled an end to a remarkable period of upheaval across the federal bureaucracy, supervised by Mr. Musk and his cost-cutting initiative.

President Trump said that Beijing was not honoring the terms of a temporary agreement and warned of further confrontation.

Kim Sajet, the director of the Smithsonian museum for more than 12 years, has tried to bring in more contemporary artists.

A bipartisan duo met with the Ukrainian president and made the case for Congress to impose harsh economic penalties on Moscow for its continuing offensive.

Senator Joni Ernst’s flip response in an exchange with constituents about the effects of Trump’s domestic policy bill spread quickly online.

The administration had asked the court to allow it to end deportation protections for more than 500,000 people facing dire humanitarian crises in their home countries.

The speaker waited more than four months to constitute the Office of Congressional Conduct, preventing it from investigating lawmakers. He has yet to name enough members to allow it to operate at full strength.

The Trump administration has expanded Palantir’s work with the government, spreading the company’s technology — which could easily merge data on Americans — throughout agencies.

An energy company plans to revive pipelines that were blocked on environmental grounds, as President Trump pushes states on fossil fuel projects.