James E. Dennehy, the highly respected leader of the largest and most important field office in the bureau, said in an email to staff that the F.B.I. was in “a battle of our own.”

Senators, take heed.

If Danielle R. Sassoon, the interim U.S. attorney, agrees to drop the prosecution of Mayor Eric Adams, the decision could threaten the reputation of a famously independent office.

Residents of Northeast Philadelphia looked on in disbelief after the crash on Friday night that also injured at least 19 people on the ground.

The prosecutor firings and a move to scrutinize thousands of F.B.I. agents were a powerful indication that the president has few qualms deploying federal law enforcement to punish perceived enemies.

Testifying in a confirmation hearing, Kash Patel, who is nominated to lead the F.B.I., also sought to allay fears about his fitness to serve.

The list has generated unease inside the bureau given the mass firings at the Justice Department in recent days.

Kash Patel exhibited unflinching fealty during Donald Trump’s four years out of office, standing by him during the grim days after the F.B.I. search of the president’s Florida estate in 2022.

The F.B.I. nominee has not only cast his political lot with the president, he has also used the connection to the Trump brand, Truth Social and other Trump-linked entities as a significant source of income over the past several years.

Robert F. Kennedy Jr., Kash Patel and Tulsi Gabbard, three of President Trump’s high-profile picks, on Thursday will make their cases for confirmation.

The nominee for F.B.I. director made his nonprofit into a publicity machine, selling his children’s book, his clothing brand and his image as Donald Trump’s ultimate loyalist.

The messages showed that F.B.I. investigators took normal bureaucratic steps and precautions when opening an extraordinarily sensitive inquiry into Mr. Trump’s attempts to overturn the 2020 election.

President Trump’s directive is supposed to exempt national security and public safety positions, but the F.B.I. has put an immediate hiring freeze in place.

The Privacy and Civil Liberties Oversight Board, which the White House has threatened to purge, called for new limits on the list in a report issued on Friday.

Kash Patel, Donald J. Trump’s choice to run the bureau, has made a series of spurious assertions about the Russia, Jan. 6 and classified documents inquiries.

Kash Patel’s public comments on the QAnon conspiracy theory suggests he sees its adherents more as an audience to be courted rather than an ideology to follow.

A woman once married to the brother of Pete Hegseth, the defense secretary nominee, submitted a sworn statement to the Senate in a late-hour complication to his confirmation. His lawyer denied her account.

The order is titled “Ending the Weaponization of the Federal Government,” but it asserts that the Biden administration might have acted illegally and directs agencies to seek evidence.

Christopher A. Wray, the former director, stepped down Sunday. Brian Driscoll, who recently took charge of the F.B.I.’s Newark field office, will be acting director, according to a White House statement.