Morrigan, thank you for your response.  
Recess appointment - granted the Supreme Court barely overturned that one.  
I'm not a constitutional scholar but I will address your allegation of "killed 4 Americans overseas".  W. Bush made it legal to take out terrorists overseas with an executive order (and BTW W signed more EOs than Obama).  And allegedly 1 was a target, 3 accidental.  I don't like the drones either, but we simply cannot have all our able-bodied military as well as national guard overseas killing people.  Besides the moral issue, W tried that and look at the horrible quagmire it made, and even after all that, it was Obama that took out Bin Laden.
And as to making health insurance available to millions more Americans rather than having them go bankrupt or die in the gutter because of illness?  It's high time we caught up with the rest of the civilized world.  If anything he did there was unconstitutional why didn't the Supremes take it out?  Oh wait they said it was ok.