MIAMI -

The Coast Guard has repatriated 38 Cuban migrants, who were trying to make it to U.S. shores.

They were stopped south of the Florida Keys.

Coast Guard officials said Thursday the first group of 20 Cubans were spotted in a boat south of Marathon on June 7. The second boatload of 18 Cubans was spotted by a Customs and Border Protection aircraft the same day southwest of Key West.

Both groups of Cubans were taken aboard Coast Guard cutters. The cutter Ocracoke took them to Cuba on Wednesday.

Under the U.S. "wet foot, dry foot" policy, most Cubans who make it to American shores are permitted to stay, while most of those caught at sea are returned home.