WATCH: A smuggling boat carrying 22 illegal immigrants, including 13 Chinese nationals, was intercepted off the Florida coast in what sources call a rare and "extremely dangerous" attempt to enter the U.S. CBP says an aircraft spotted the vessel near Key Largo before agents and the Coast Guard moved in, also apprehending a suspected Cuban smuggler. Sources say Chinese nationals rarely attempt to enter through Caribbean maritime routes. Read what happened next: ▻