Romney has frequently blamed the influence of teachers unions for the failings of the public education system. He supports legislation championed by Governor Scott Walker of Wisconsin and Governor John Kasich of Ohio stripping collective-bargaining rights from teachers and other public employees. He has stated that superintendents and principals should be able to fire teachers without regard for seniority. During a presidential primary debate in 2011, he said that efforts to reduce classroom size were a ploy by teachers unions to promote the hiring of more teachers; and he vowed, "as president, I will stand up to the National Teachers Unions."