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.

The New York City mayor took a combative tone in a speech to clergy members after several days of absence from public appearances.

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

Senior officials under President Trump have talked with prosecutors in Manhattan about the possibility of abandoning the corruption case against New York City’s mayor.

The prospect of legal challenges to President Trump’s purges may be a feature, not a bug, for adherents of sweeping presidential authority.

The move follows the resignation of the department’s chief corruption prosecutor, who chose to step down after being told the Trump administration was reassigning him to a position related to immigration enforcement.

The number of arrests there was uncertain. Illinois officials, including the governor, said they had not been given advance notice.

The early days of the transition have been marked by dismissals and dread.

The White House defied a law that requires giving Congress 30 days’ notice and detailed reasons before removing the watchdog officials.

Ed Martin, a longtime advocate for Jan. 6 defendants recently named to run the prosecutors’ office, sought to undo a judge’s order barring Stewart Rhodes from visiting Washington.

President Trump pardoned men who violently attacked police officers on Jan. 6 along with nearly 1,600 other people who had been charged in connection with the riot. But his grant of clemency did not erase the video evidence of their crimes.

The man faced felony charges related to the Capitol attack, including using an explosive device to assault police officers. President Trump granted broad clemency to the rioters in one of his first acts.

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.

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.

Two prominent far-right extremists with central roles in the Capitol attack, Enrique Tarrio of the Proud Boys and Stewart Rhodes of the Oath Keepers militia, have been set free.

President Trump made major policy moves immediately after taking office, withdrawing from major international agreements, promising steep tariffs and pardoning nearly all of the Jan. 6 rioters.

Invoking presidential emergency powers gives the president the ability to go around Congress and unlock federal funding to crack down at the border.

He issued formal pardons to more than 1,550 rioters charged with a wide range of crimes and commuted the sentences of 14 members of far-right groups.

President Trump’s pardons in the Jan. 6 case abruptly ended the most complex investigation in U.S. history. It also raised questions about what he will do next against a department he has said is full of his enemies.