Rob -
I don't think you are "condoning" anything by continuing to live in the USA. To seriously hold that position would drive a person insane, IMHO - society will always be engaging in activities you find morally repulsive, and you won't be able to stop them all, or to avoid participating in some small ways.
I was born at a given time and place and made a citizen without any choice of my own. I have to live someplace and at this moment it is here. So as far as it is within my power I try to live in peace. Live simply, as best you can manage do not engage in activities that support evil, and do not neglect your neighbors, or the stranger, or the poor, the widow, the orphan, and the innocent. Do what you can, to the best of your ability, and don't go insane.