Texas Gov . Rick Perry said ISIS terrorists may come into U.S. through border with Mexico . Ruben Navarrette : Pentagon rep said there is no evidence that ISIS is trying to cross border . Navarrette : In the first camp , there is California Gov . Perry seems to be mounting a bid for president on anti-Mexico fear-mongering . Navarrette : The GOP presidential candidates are all talking about the threat of ISIS.
Texas Gov . Rick Perry said ISIS terrorists may come into U.S. through border with Mexico . Ruben Navarrette : Pentagon rep said there is no evidence that ISIS is trying to cross border . Navarrette : Perry seems to be mounting a bid for president on anti-Mexico fear-mongering . Navarrette : The GOP presidential candidates are all talking about the threat of ISIS.