Sounds like you missed what's been going on for the last 8 years.
Allow me to be naive one more time :X.
I will have the benefit of the doubt, that if Obama is President, **** won't be as shady and controversial.
If we had Bush for another 8 years for whatever reason (I hear from some that's basically what McCain will be, but I don't know), then I'd be worried about such a measure. And of course, the President simply does not control
everything, and there are people out there that would abuse this DNA system, but I have faith that if Obama, or even Hilary, wins the election, things won't be nearly as bad a they are now. Maybe even McCain wouldn't be as bad, or at least "Bush Lite".
But if Obama wins and things don't get better, then my hope for the US government will be in shackles.