That's interesting...over the last 3 application cycles (according to the conference reports), number of completed applications were between 450-550 total. If 300 of those are international and in their own applicant pool, then yes, your odds go way down, but US Citizens soar far over what I think is even remotely possible (this given the number of people on here who aren't yet interviewing, and the number of colleagues we know who were not selected in past years). Something doesn't line up...I wonder what's going on...? That would be 1 in 3 domestic applicants get in. No chance.
I think they must have given you incorrect numbers--that there are less international applicants...a typo and there's 30?!...that would certainly make your odds a wonderful 1 in 3. I just don't think the domestic odds could be that high, though. Obviously we're missing some data points here! Ugh...more mysteries of the EIS! smh