That's actually how we see all of you, period.
At least you have identified a point of bias you can work to alleviate.
You see, there are no "Americans" when you come right down to it. At least, not the ones you mean. We come from all over the rest of the world. So any criticism or praise of American aesthetics is not really saying anything abut us, but the rest of the world as a whole.
"Real" Americans look like this (or something like them):http://www.deathpenaltyinfo.org/images/namericanimage.jpg
Seriously though, I've often noticed how Republicans are fugly.
While I would love to piss on repubs, I just don't think this is especially true. For starters, most people are not all that great looking, repub or otherwise.
I think politicians, in general, tend to be older, since electing 20 year olds to lead us is probably not a great idea. So age is probably part of it.
And there are plenty of good looking right wingers you could point to. S.E. Cupp is good looking. Former Texas Gov Rick Perry is pretty good looking. Pretty much every female news caster on Fox "News" not named Greta is hot. I thought Michelle Bachman was good looking, if you ignored the spinning-pinwheel eyes:https://talkaboutequality.files.wordpress.com/2011/11/michele-bachmann-203x300.jpg
If you didn't know she was criminally insane, you'd probably think, "man, she's pretty."
In all, I don' think repubs are any more or less ugly than anyone else.