Nick Frentz, a Democratic state senator from Minnesota, is coming to the defense of vice presidential candidate Minnesota Gov. Tim Walz as he faces claims regarding his leadership and criticism over state policy.Several Republican state lawmakers told Fox that Walz was “difficult” to work with during their time working alongside him in the legislature.Frentz, who currently represents the city of North Mankato, painted a different picture, telling Fox News Digital that in his experience, Walz is “very straightforward and very easy to work with.”“He was a high school teacher and football coach in the ’90s when he started his family in Mankato. He’s genuine, down to earth. He’s honest. He’s the kind of person that you can enjoy,” Frentz said in an exclusive interview. “His rural roots are real, and his commitment to everybody in the country, including rural America, is quite real. And I thin …