U.S. Proposes Unmanned Border Entry With Mexico

"But U.S. Rep. Michael McCaul, a Texas Republican member of the House Homeland Security committee, questioned the wisdom of using resources to make it easier to cross the border.

"We need to use our resources to secure the border rather than making it easier to enter in locations where we already have problems with illegal crossings," McCaul said in an email. "There is more to the oversight of legal entry than checking documents. (U.S. Customs and Border Protection) needs to be physically present at every point of entry in order to inspect for contraband, detect suspicious behavior and, if necessary, act on what they encounter."