With one viral line on cable TV - "these guys are just weird" - Tim Walz vaulted into contention for the job of Kamala Harris's running mate. The 60-year-old brings with him a folksy, plain-spoken and sharp-tongued approach to taking on the Republican opposition. He also comes with a compelling resume - a public school teacher, football coach and National Guardsman before he entered politics. His political experience, representing a Republican-leaning district in Congress and then...