Federal authorities swarm the suspect’s home in an L.A. suburb.

It was not clear if the authorities had entered the home in Torrance, Calif., a white-collar city of about 150,000 people close to popular beaches.

Firm Building Trump’s Ballroom Got a Secret No-Bid Contract for a Nearby Job

The National Park Service increased the value of the contract several times over and then awarded it to Maryland-based Clark Construction, in a process that experts said was highly unusual.