to answer the OP's question...... from mua-nevis you can do residency in florida and you can get licensed here in florida. the only thing isthat you cannot do all your rotations here unless the school is approved by the florida board of independent education (which mua is not) and has an affiliation agreement with the hospital.
mua nevis is approved by the new york medical board which will allow them to do all their rotations in the state of new york. they can also do residency and get licensed there.
for texas.... its a little tricky..... there are only 3 carib schools deemed equivalent by the texas med board..... sgu, auc, and ross. since mua is not deemed equivalent, there is a lot more paperwork and hoops to jump through and you will be reviewed by the board on a case by case basis. i will say thay from what i have heard, its an uphill battle with the texas med board outside of the 3 schools deemed equivalent for texas.