I've always wondered how professors and admission committees in the US think about international applicants for doctoral programs in the US.
Skills:
Why are international applicants selected over (I believe sufficient) domestic applicants at all? Are there some skill differences?
Funding:
Isn't it more expensive and risky to provide >5 years funding to an international student than a domestic one? When do they think an international applicant trustworthy and appropriate for funding their studies?
I am wondering specifically about PhD programs (not Master etc) because some programs offer funding before even knowing the student in person which seems risky because if I were an advisor it would be difficult to evaluate a student's value for my lab before having actually worked with her.