So many people posting so fast it's hard to keep up.

Oh course you didn't vote for him, you're 17 years old (according to your profile ), so really, you have no position to critisize him when you're not even at the age of consent yet. And by doing everything in your power, that means doing nothing except casting one vote, right?
Age of Consent=16

And I believe I am in a position to criticize him, as his decisions are affecting the country I live in in what I believe to be a negative way.

I don't know too much about American politics, so I won't argue there. But homosexual marriages are illegalized now, aren't they? So there you have it. He does have SOME power, apparently.
That's been changing. One state has already found the laws to be unconstitutional (as they are) and is now granting marriage licenses to homosexual couples. The situation is becming increasingly murky.