I know for a fact that a handful of states have blocked anyone from getting a liscence if they even did a protion of thier medical school curriculum on-line.
I believe these states are California and Indiana, and possibly Texas.
If you are interested in the IUHS, I would suggest to do all your time on the island of St. Kitts.
Also, if you plan on attending, check the websites of the states you are interested in before hand...most of them post thier liscensure requirements on line...they are in a legal format.
DO NOT, under any circumstances, contact the state liscensing boards individually, they are extremely busy people, and I know for a fact that IUHS does a pretty good and ongoing job of keeping in touch with most states in an ongoing effort to improve their students chances of getting liscensure.
"Who dares, wins."
-Motto of the SAS
"Oh boy...that's gonna cost 'em."