Just heard from Chicago - a letter of acceptance from Cathy Cohen. Very excited, but mostly relieved!
I'm not sure if there is necessarily a U.S. bias, as both of my degrees are from Canadian schools (U of T and UBC) but based on what the letter said, it was my academic record and research agenda that put me over the top. I had relatively weak GRE scores (Q149, V167) and mediocre undergrad GPA, but strong letters of rec. and a few publications probably made up for that. So if anyone's worried about one or two aspects of the application, don't lose hope. Good luck everyone!