the commitment the federal government made to those people and let them keep what they've got. >> reporter: the president remains in obama damage control mode, conceding at a "wall street journal" event packed with top ceos that his signature achievement could use a makeover. >> we'll have to obviously remarkette and rebrand. and that will be challenging in this political environment. >> reporter: but as cnn reported, his latest pr challenge started right at the white house. >> i recently received a letter from a woman named jessica sanford in washington state. >> reporter: when he cited jessica sanford, a single mom from washington state an obama care success story, just days after that presidential shoutout, sanford learned her state's health exchange made a mistake, calculating her obama care tax credit. >> i don't trust the system at all. here in washington state. >> reporter: now she says she can't afford the plans available in her state. >> i wanted to be the poster child of how it did work out.