In December 2020, Walberg was one of 126 Republican members of the House of Representatives to sign an amicus brief in support of Texas v. Pennsylvania, a lawsuit filed at the United States Supreme Court contesting the results of the 2020 presidential election, in which Joe Biden defeated incumbent Donald Trump.
In December 2020, Walberg was one of 126 Republican representatives who signed an amicus brief in support of Texas v. Pennsylvania, a lawsuit at the United States Supreme Court concerning the 2020 presidential election results where Joe Biden defeated incumbent Donald Trump.