Of course, they're another aspect to this social issue- the money. Joe Lieberman receives money from both the health care industry and the military industrial complex, as does John McCain. They're perfectly aware of how this effects their legislative capabilities- no doubt they rationalize it to themselves as a necessary evil, something that they must do in order to keep their positions. This kind of 'vote for money' trade system works without deviation in American politics. Take, for example, the amendment to the military budget that Al Franken proposed- it limits the ability of groups taking US money to have employees sign contracts that, say, take away legal recourse for being raped. Of course, this means that KBR, previously Halliburton and a huge government funds recipient with a massive lobby, would have to pay financial restitution. 30 Republicans happily sold their vote, even on this blatant issue, and are surprised that the public's opinion is against them.
If we continue to allow the scare tactics of chicken hawk warmongers to control us, we'll slowly be robbed of not only our money, but our rights and means of survival as well. Our social spending policy should be to use our tax dollars in the way that does the most good per dollar- and war is certainly not that.