A federal judge in New Hampshire blocked the Trump administration from enforcing its executive order ending birthright citizenship. The move, according to the judge, applied to all babies nationwide, including children of undocumented parents who could have been denied citizenship under the order.

Last month, the Supreme Court limited the ability of judges to block executive branch policies nationwide. But in this instance, Judge Joseph Laplante, a George W. Bush appointee, was able to pause President Trump’s order by certifying a lawsuit against it as a class-action — a maneuver that had been suggested by the justices as an alternative to nationwide injunctions. He also paused his order for seven days, allowing time for an appeal.

Trump has fought to end birthright citizenship, which is laid out in the Constitution. Judges have consistently rejected the idea, and Judge Laplante wrote in his order that the plaintiffs would likely succeed in arguing that Trump’s order was unconstitutional.

In other Trump administration news:

• The F.B.I. has been using polygraphs to test the loyalty of its senior employees.

• The Secret Service suspended six agents involved in securing the site where a gunman tried to assassinate Trump last summer.

• Trump’s budget plan would cut basic scientific research by roughly one-third, a new report found, and his D.E.I. cuts have hit white scientists from rural areas.

Israel concluded that some of Iran’s nuclear material survived

An Israeli assessment found that some of Iran’s underground stockpile of near-bomb-grade enriched uranium survived U.S. and Israeli attacks last month and may be accessible to Iran’s nuclear engineers, a senior Israeli official said.