Single payer, and for good reason. There's big money in there.
U.S. government scales back Obamacare impact for 2014 | Reuters
Because of Obamacare, healthcare spending is expected to rise 6.1 percent in 2014 (compared with a previous projection for 2014) of an increase of 7.4 percent. So, what's 6.1 percent, you may ask?
"...and spend more of their healthcare dollars on prescription drugs and physician services... "
Oh, they've got this all figured out. The FDA is funded almost entirely by fees imposed upon pharmaceutical companies. The FDA, not the FTC, is the governmental body that regulates <cough> Direct-To-Consumer (DTC) advertising of drugs. The first DTC advertisement was placed in Reader's Digest in 1981, the first TV ad in 1983, and in 1985 the FDA officially blessed DTC advertising with a ruling that made it legal, but only if they read off all of the warnings and side effects (which in effect made television advertising impossible because of the time it took to read all that crap). In 1997 the FDA released new draft guidance that effectively enabled the use of broadcast ads for DTC by removing the requirement to announce all of the side effects and warnings, provided the drug being advertised met certain standards for safety (which in and of itself is a joke, since no new drugs - the ones which are the most heavily advertised - have no historical safety data at all).
The result of the 1997 ruling is that DTC advertising increased from $220 million in 1997 to over $2.8 billion in 2002. That's just five years. The prescription rate of DTC drugs has increased by 34.2%, compared to only a 5.1% increase in non-DTC prescription drugs.
In 2012, DTC advertising was $3.97 billion, actually down $2 billion from the 2006 peak of $5.95 billion.
Selling Sickness: How Drug Ads Changed Health Care
Incidentally, in all of the entire world, only two nations allow DTC advertising for drugs: The United States (world's largest manufacturer of prescription name-brand drugs) and New Zealand (world's largest manufacturer of prescription generic drugs).