WATERLOO, Iowa — Democratic presidential candidate Barack Obama has stopped wearing the American flag lapel pin that has become a common symbol of patriotism since the Sept. 11, 2001 terrorist attacks. ... "I decided I won't wear that pin on my chest," he said in the interview. "Instead, I'm going to try to tell the American people what I believe will make this country great, and hopefully that will be a testament to my patriotism."