MICKEY KAUS: Immigration Wages: Study That Said Mariel Boatlift Didn’t Cause Reduced Wages In South Florida Turns Out To Be Wrong. “In both academic and political terms, this is a BFD. It looks like the law of supply and demand works. More immigrant workers translates into lower wages. The most conspicuous, unassailable finding to the contrary has apparently just been demolished. A major prop in the arguments for greater low-skilled immigration (including arguments for amnesty) –‘What about Mariel?’ — would seem to have disappeared, though the other side has yet to be heard from. (And they will be heard from.) Borjas’ study only just went public.”