going after the affordable care act, his health care legacy, a very strong statement from the president saying yes, the legislation that he says the u.s. passed was not perfect, but certainly made things better 90%, he said of the american people now at least have the health care insurance and he said it's very aggravating, very frustrating that republicans in congress once again trying to change that. let's bring in our cnn politics reporter id tore at large chriscy liza, juan na summers and cnn political director david chalian. david, up to you first to give us your assessment. it's not often we're hearing from president obama now days. we did hear from him. didn't mention trump by name, didn't mention the republicans name but his message was clear. >> knows the name of the health care law and his is on it. it's obamacare. he understands it as his legacy. you can hear it in the way he describes it.