But not at the expense of this country. And I don't believe that our government should dole out our taxpayer money for foreign aid. If our citizens believe in a cause, they can donate to that cause.
But I do want to point out that our constitution doesn't just apply to American citizens. It applies to all people. Also, I think there's a libertarian principle that says that liberty starts with the individual (not with an individual who also is an American citizen). So saying "I don't give a damn about all those other countries" kind of goes against the ideals of both that principle and the constitution. But maybe I'm over scrutinizing your answer. Maybe you just meant "I don't want to fund these other countries" in which case, I'm with you.