Almost three million Cubans are believed to have left since 1959, often in waves tied to politics and levels of hardship. The vast majority settled in Florida, sending back billions of dollars annually in remittances to help friends and relatives still suffering under the strangling tentacles of state control. Over the decades, they’ve built a large, successful voting block, well-organized, politically active and largely dedicated to ridding Cuba of communism. Entire generations have been raised on the notion that the ancestral homeland must be freed