Cuban migrants flow into Florida Keys

More than 500 Cuban immigrants have come ashore in the Florida Keys since the weekend, the latest in a large and increasing number who are fleeing the communist island.
About two dozen migrants were being held Wednesday afternoon in a fenced-in area outside a U.S. Customs and Border Protection station in Marathon.
Tents had been erected to provide shade.The influx is stretching thin U.S. border agencies both on land and at sea. It is a dangerous trip, with unknown thousands having perished over the years. But an increasing number of Cubans are taking the risk. Since Oct. 1, about 4,200 have been stopped at sea. The Coast Guard tries to interdict Cuban migrants at sea and return them to the island, but many make it to shore.