About two-thirds of Texas prisons are not fully air conditioned, and dozens of inmates have died in the sweltering heat.

A federal judge has found the extreme heat in Texas prisons that don't have air conditioning is "plainly unconstitutional."

President Donald Trump, who promised "the largest deportation program of criminals in the history of America," has expelled thousands of migrants from the U.S. and ignited a potentially bitter clash between his administration and the federal judiciary.