The order will deploy 1,500 troops to build physical barriers, but they will not be used for law enforcement, a military official says.

President Donald Trump's administration has directed U.S. prosecutors to criminally probe local officials who resist immigration enforcement efforts, intensifying a sweeping crackdown that Trump launched the day he took office.

Shortly after taking office, President Trump issued 11 executive orders cracking down on illegal immigration. The orders target what he sees as an invasion at the southern border and significantly alter how the U.