A Wisconsin judge has postponed a preliminary hearing for one of three former aides to President Donald Trump facing felony forgery charges related to the 2020 election amid questions about what statements the man made to prosecutors could be admitted in court.

Republican U.S. Sen. Ron Johnson is asking the U.S. Department of Justice to investigate allegations made by a former attorney for President Donald Trump in Wisconsin that a judge overseeing his felony case is guilty of misconduct and must step aside.