Last night, Chris Hayes had some REALLY bad news for Republican members of Congress: As pressure mounts for Republicans to come up with a replacement for Obamacare, Obamacare itself is actually enjoying record levels of popularity among the American people. according to a new NBC News/Wall Street Journal" poll, 45% of Americans now believe the Affordable Care Act was a "good idea" compared to 41% who think it was a bad idea -- the first time, we should note, since the law's passage in 2010 that more people approve than disapprove.