St. Louis attorney Mark McCloskley, who’s seeking Missouri’s GOP U.S. Senate nomination this year, was the guest speaker at Friday’s Columbia Pachyderm meeting. McCloskey also appeared live in-studio that morning on 939 the Eagle’s “Wake Up Columbia.” He says he’s not a politician, noting primary opponents U.S. Reps. Vicky Hartzler (R-Harrisonville) and Billy Long (R-Springfield) …