Former Wisconsin Gov. Scott Walker (R) ruled out a run for the U.S. Senate on Monday, keeping a big name on the sidelines in the GOP’s push to oust Sen. Tammy Baldwin (D-Wis.) next year. Walker told the Milwaukee-Journal Sentinel in an interview that he plans to stay put as chairman of the Young America’s Foundation (YAF), an organization aimed at promoting conservatism to students and young adults, through 2025. He added that he’s not interested in the position after spending two terms in the Madison governor’s mansion. “Plus, I don’t see myself in the Senate,” Walker said. “After getting...