As David Nir noted earlier, the Koch brothers are out with a new set of ads accusing Democrats of being insurance company stooges for passing Obamacare. But if the Kochs were in the slightest bit serious about going after politicians supported by big insurance companies, Democrats wouldn't be the place to start, as these two charts from opensecrets.org make clear:
I'm looking forward to their ads going after Mitch and John. Any day now, right?