MIAMI — Federal agents say a man borrowed his friend’s boat on Jan. 21 and used it to pick up 27 migrants from Cuba to bring them back to the United States. But Julio Borges Barrero, 31, was stopped about 11 nautical miles southeast of Marathon in the Middle Florida Keys around 4:30 a.m. two days later by a Coast Guard patrol. On board the 28-foot Proline center console boat were 27 people from Cuba, according to a complaint filed Thursday by an agent with Homeland Security Investigations. The Coast Guard transferred Borges Barrero to HSI custody, where he faces migrant smuggling charges. His …