cnn.com/cafferty file. the error was my producer's file. >> hold on a second because i want you to watch this little exchange the president had in iowa wrapping up his town hall meeting there. watch this. >> my name is tara howard and i'm a fifth grader. i go to cardinal elementary. >> well, it's good to see you. >> my friend wanted me to ask you what kind of pie you had and my grandma b-mom says high to tom vilsack. >> okay, there you go. i had rhubarb pie. and it was some tasty pie. by the way, some of you heard that my cholesterol, it's because of pie.