How voters responded to Trump in Cleveland GOP debate

Trump's tough talk didn't end with Thursday night's GOP debate. He's now lashing out at a group of Ohio Republican voters who monitored the debate in a dial test with Republican strategist and CBS News contributor Frank Luntz. They were often critical of Trump. In response, Trump tweeted, ".@FrankLuntz, your so-called ‘focus groups’ are a total joke. Don't come to my office looking for business again. You are a clown!" Luntz joins “CBS This Morning” from Cleveland to discuss Trump’s attacks.