A Colorado Mesa University professor who allowed his students to be recruited to stump for a presidential candidate in his class is under scrutiny. Students in Stan Heister’s International Business class were visited by a representative recruiting workers to promote Hillary Rodham Clinton’s campaign for president last month, according to students. Nikki Caravelli with the group Work for Progress and Fair Share Action, a political action committee, was invited by the professor to come speak to his class. On Sept. 22, Caravelli came to Heister’s class, said student Chris Cady. She came up to him and asked him if he...