Migrant advocates on Thursday were speaking out against plans by President Donald Trump to revamp Guantánamo Bay to detain and hold thousands of undocumented immigrants sent from the United States.

President Donald Trump announced Wednesday he plans to send 30,000 criminal illegal aliens to Guantanamo Bay in Cuba to ensure they don't return.

MIAMI - President Donald Trump announced Wednesday that his administration plans to send thousands of undocumented immigrants to detention facilities at Guantanamo Bay, Cuba, a move that has drawn sharp reactions from South Florida officials and immigration advocates.

Trump made the announcement before he signed the Laken Riley Act into law as his administration's first piece of legislation.

Trump announced the plan before signing the Laken Riley Act, a law requiring Immigration and Customs Enforcement to detain undocumented immigrants accused of theft, burglary, larceny, or shoplifting offenses.

The president says up to 30,000 criminal migrants deported from the United States could be housed at the facility in Cuba, but it wasn't immediately clear how the plan would be implemented.

By Patsy Widakuswara and Aline Barros WHITE HOUSE - U.S. President Donald Trump said Wednesday that he would sign an executive action directing his administration to prepare to detain undocumented migrants at Guantanamo Bay,

The latest piece of the mass deportation puzzle includes sending as many as 30,000 criminal migrants to the navy base at Guantanamo Bay.

A U.S. Air Force jet with 80 migrants that left Texas for Guatemala charted a path around Mexico because it couldn't fly over the country, according to a U.S. official. The Mexican government said it never denied permission.

Donald Trump Jr. suggested that he wants to reopen Alcatraz Federal Penitentiary for undocumented immigrants amid President Trump's mass deportation operation.

ICE carried out large-scale operations in New York City, representing the most visible immigration crackdown since Trump’s return to office.