DES MOINES — Race and ethnicity aren’t factors in the 2012 presidential race — rather, it boils down to leadership, GOP candidate Herman Cain said while visiting Iowa Thursday. Cain, a prominent black businessman from Atlanta, said while he was “proud of America” for electing a black man to the presidency in 2008, “the problem is that people did not look below the surface” from President Barack Obama ‘s ethnicity to his leadership skills, which is what voters truly care about in 2012