“When you look at all of the problems that are streaming and flowing over that border, the first thing we have to do is secure it. Job number one.”

American Republican politician and former real estate developer, born 1960

Matthew Martin Rosendale Sr. is an American Republican politician and former real estate developer. Born in 1960, he served Montana in public office for more than a decade and represented the state in the United States House of Representatives from 2021 to 2025. Rosendale served in the Montana House of Representatives from 2011 to 2013, then in the Montana Senate from 2013 to 2017, where he was majority leader from 2015 to 2017. He was elected Montana state auditor in 2016 and held that office from 2017 to 2020. He also ran unsuccessfully for Congress and the U.S. Senate before winning election to the House, first for Montana’s at-large seat and later for the state’s 2nd congressional district.