Try talking about the Affordable Care Act, rather than Obamacare, as it seems a fair number of Americans don't know these are the same thing (per vox pop by TV co asking people on the street).
I don't have figures to hand (and your interlocutor may not respond to them anyway), but IIRC Michael Moore's film Sicko predominantly features white Americans, including working man (carpenter?) who lost his fingers in a saw accident and had to chose which to have reattached, because he couldn't afford to have them all.
Sicko seems to be online here: documentarystorm.com/sicko/