The claim that car dealer and Republican U.S. Senate candidate Bernie Moreno held an MBA from the University of Michigan has appeared in both a car dealership application and in a short biography of Moreno when he joined the board of the Cleveland Foundation. However, a spokeswoman for the university on Monday said all Moreno has is a bachelor’s degree in business that was awarded in 1989. Moreno’s campaign on Tuesday afternoon blamed the first instance on “a staffer who made a mistake.” It said it didn’t know how the claimed credential made its way into the Cleveland Foundation bio. Moreno is…