Prosecutors have said Russell Valleau, 62, became upset upon receiving campaign material regarding Democratic presidential candidate Kamala Harris.

Russell Valleau, 62, was convicted of assaulting, opposing, impeding, intimidating or interfering with a federal employee, federal court records show.

A Michigan man was convicted in federal court after officials say he pulled a knife out on a postal worker because he received mail about former Vice President Kamala Harris. Russell Valleau, 62, was convicted of assaulting a federal employee, according to a Feb. 28 news release from the U.S. Attorney’s Office for the Eastern District of Michigan.

A Michigan man faces up to a year in jail after a federal jury found him guilty of assaulting a U.S. Postal Service worker in a