Grothman was first elected to Congress in 2014 after more than 20 years in the Wisconsin State Legislature.
He sits on the committees overseeing the federal budget, Education and the Workforce, and he chairs the subcommittee of National Security, the Border and Foreign Affairs.
He reported a West Bend condo he uses as an investment property valued between $50,000 and $100,000.
He had a net worth of about $1.1 million in 2018, according to the most recent estimate by Open Secrets.
