LANSING, Mich. The state of Michigan is joining other states in suing the U.S. Postal Service over service changes, Attorney General Dana Nessel said Tuesday. A lawsuit was in the works Tuesday in federal court in Washington state, although Postmaster General Louis DeJoy also announced that he was suspending certain changes until after the fall election. Nessel and attorneys general in other states said significant changes must face a public comment period and go to the Postal Regulatory Commission. Related: Ballot drop boxes seen as a way to bypass the post office