Cuban migrant found on tiny foam homemade raft off Key Biscayne, feds say

MIAMI — A man from Cuba was found almost 20 miles from shore off Miami-Dade County on Monday floating on a homemade foam raft that was no bigger than a small bed mattress, federal agents say. A boater saw the man about 16 miles out in the ocean off Key Biscayne and called VHF Channel 16, the preferred method for calling in a maritime emergency, U.S.…