The governor has revealed more details of a plan to send 1,000 National Guard troops to the border, to act as a “force multiplier” for Department of Public Safety officers already there.

Gov. Rick Perry says the move, dubbed “Operation Strong Safety,” will cost approximately $12 million per month. Major General John Nichols of the Texas National Guard says troops will be authorized to detain people if necessary, but that he expects them to play a “deter and defer” role, meaning they will deter criminal activity and defer arrests to DPS officers.

DPS Director Steve McCraw said the focus of the operation is to combat crime driven by drug cartels, including homicide, sexual assault, robbery and extortion.

Attorney General Greg Abbott said his office is consulting with the governor’s office and the National Guard about “legal issues related to the deployment.”

The move is in response to the more than 50,000 immigrant children who have been detained at the Texas-Mexico border since October. Many of them are from Central America and come here unaccompanied by their parents.