The Pentagon is beginning “site assessments” of six military bases, some as far north as North Dakota and Massachusetts to house a new wave of illegal immigrants that have entered the U.S. via Mexico illegally.

A Pentagon memo to Rep. Martha Roby, Alabama Republican, detailed the Office of Refugee Resettlement’s plans to expand its shelter capacity.

“This temporary increased shelter capacity is a prudent step needed to ensure ORR meets its statutory responsibility to provide shelter for the unaccompanied children referred to its care and to assist [U.S. Customs and Border Protection] in ensuring that the U.S. Border Patrol continues its vital national security mission to prevent illegal migration and trafficking, and to protect the borders of the United State,” the memo said, according to the Washington Examiner. The Washington Times