Postmaster General DeJoy is under investigation by the Justice Department, his spokesman says. Postmaster General Louis DeJoy, left, after testifying before the House Oversight and Reform Committee in February.Credit...Stefani Reynolds for The New York Times June 3, 2021, 1:43 p.m. ET The Justice Department is investigating Postmaster General Louis DeJoy over potential campaign fund-raising crimes when he was still in the private sector, according to his spokesman, who said that Mr. DeJoy is cooperating with investigators. The investigation focuses on campaign contributions made by people employed by New Breed Logistics, the North Carolina-based company that Mr. DeJoy led before he was appointed postmaster general last year. Mr. DeJoy was a leading fund-raiser for Republicans and President Donald J. Trump.