Can you run those reasons by us?
If you go to the Carib, you're going to a for-profit school, thus you're being sold a product. That product may or may not include secured rotations at US hospitals. That product may or may not include reasonable chances for getting a residency in the US after med school. By contrast, at a mainland school, you have no barriers to entry other than competition.
To put it another way, 94% of US MD grads get residencies right out of med school. 50% of Carib grads match.
http://www.nrmp.org/data/resultsanddata2011.pdf That 50% may actually be only 25% of an entering class, because Carib schools don't divulge their failout rate (which you can figure out by looking at entering class sizes).
The thing that bothers me, and thus motivates me to bring up these issues, is that Carib schools attract students who don't have stats competitive for mainland schools, and they put 400+ students in a class. They don't put attention on the bottom half of the class that is paying the same tuition and has the same expectations of getting to be a doctor, and then that bottom half does a lot of failing out with $100k or $200k in student debt that can't be discharged in a bankruptcy and no resume to get a high paying job.
The price tag that I personally would put on having support from my school and removing residency obstacles is about $50k. Maybe even $100k.
Best of luck to you.