evidence: Clemens, who worked on Bernie Sanders’ 2020 Iowa caucus campaign, described Minnesota Gov. Tim Walz as "an inspiring pick" for vice president. [...] Sen. Chuck Grassley is sharing his initial impressions of Minnesota Gov. Tim Walz — Vice President Kamala Harris’ pick for a running mate. [...] Walz was born and raised in Nebraska, served 24 years in the Army National Guard, and worked as a high school social studies teacher before turning to politics. He’s been Minnesota’s governor since 2019.