By Luc Cohen, Tom Hals NEW YORK (Reuters) -Two U.S. judges on Tuesday extended temporary blocks on some deportations of Venezuelan migrants and signaled that President Donald Trump's invocation of a 1798 law historically used in wartime to speed up their removal from the United States may not survive judicial review.

A federal judge in Maryland has ordered the Trump administration to return a Venezuelan man who was sent to a megaprison in El Salvador despite having protection from removal.