Clearly, any compromise on immigration will turn on demands to tighten border security to prevent further illegal migration. The problem is defining what a secure border looks like. There are about 18,500 U.S. Border Patrol agents assigned to the U.S.-Mexico border. That number is far higher than at any time in the last decade. Also, barriers have been constructed along nearly 700 miles of that border. Some lawmakers, such as Sen. John McCain (R-Ariz.), would like to see more high tech resources, including drones, used to patrol the border. Others insist that a commission be established to set standards for enhanced border security.
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