Halperin's contention occurred back on Thursday, August 6, but I'm just now catching up, following a vacation, thanks to a tip from Steve Allen of the Gentleman from Lickskillet comic strip, which had a liberal media bias theme  a couple of weeks ago involving "Group Think" magazine.
When Dobbs challenged Halperin's premise - "That's immoral?" - the political director at ABC News for ten years until jumping to Time in 2007, affirmed: "Yes, to be a country this wealthy and be the only industrialized democracy that hasn't figured out how to cover everyone."
From the Thursday, August 6 Lou Dobbs Tonight on CNN:
MARK HALPERIN: There's three things that are true: We're the only industrialized democracy that doesn't cover every citizen. That is immoral.- Brent Baker is Vice President for Research and Publications at the Media Research Center
LOU DOBBS: That's immoral?
HALPERIN: Yes, to be a country this wealthy and be the only industrialized democracy that hasn't figured out how to cover everyone. Two, every other industrialized democracy has done this through a government program. And three, the President faces of tough task, because this country is not for a single payer, and it's very hard to build anything else.