Why is there a decline in U.S foreign aid to the Eastern Caribbean and when did this decline started?

Why is there a decline in U.S foreign aid to the Eastern Caribbean and when did this decline started?

This is a Graduate research paper that I would like to have done on the effect of the declining U.S foreign aid to the Eastern Caribbean region and how this affects development there. I must include primary and secondary sources (academic and governmentall) that can be varified.