I'm an international, and I have a friend who got accepted into Northwestern IBiS last year. He had a 2.57GPA, but did 2 summer internships in Harvard and MIT (and got great recs) and just had a third-author manuscript to be published in Cell at the time he was applying. So you see, research experience is FAR more important than GPA. And the international student pool is more competitive compared to domestic applicants.
Good luck!
Reverdy, you have great stats! I applied to MIT and Stoony Brook, and my GPA is nowhere near yours. And I'm international, which puts me in great disadvantage.
Good luck!