Brian M. Rosenthal

In an emotional City Council hearing, lawmakers said New York officials could have stopped exploitative loans that have devastated thousands of cabdrivers.

The federal inquiry will look into why mass transit projects in the United States, and particularly in New York, cost more than in the rest of the world.

Mr. Dietl was the private investigator of choice for Roger Ailes, Steve Bannon and Don Imus. Now, he wants to be New York City’s mayor.