Mexico Gov . David Aguilar is deploying the National Guard troops to the border . Former heads of border patrol and National Guard say the plan will have limited impact . The plan is expected to cost Texas taxpayers $ 12.4 billion per month .
Texas Gov . Rick Perry is deploying National Guard troops to the border . Former heads of border patrol and the National Guard say the plan will have limited impact . The plan is expected to cost Texas taxpayers $ 12 million per month .