Plenty. And they include some of the most anti-American zealots you'd ever get the chance to meet. Lots of them originally came here on education visas and refugee visas, which is a complete laugh. Of course their radicalization is complete once they've been to American universities, but that's a whole different subject.
I know better than to fall for that "they love Americans!" nonsense. They love what we have here, and they'd like to have it in Iran, minus Israel and half of the Sunni Arab world. And the rest would just like to have our young people fighting and dying for their freedom, while they do little more than wave banners and make Internet forum posts.
Why are we cooking this self designed receipe of defeat?