MILWAUKEE (CBS 58) -- Local immigrant rights groups took a stand on Tuesday against sending Wisconsin National Guard troops to the US-Mexico border.

"The border is not a war zone and the US obligation to receive asylum seekers under international law is a humanitarian mission not a military one," said Christine Neumann-Ortiz, Executive Director for Voces De La Frontera.

The groups rallied in downtown Milwaukee after Governor Walker said he would send troops to patrol the border if asked by President Trump.

Walker says that it's a matter of national security.