We cannot confuse immigration enforcement with counterterrorism.
They are very different functions of government. For either to be effective, both must be conducted separately. The world’s tallest fence along the Mexican border will not secure the longer Canadian border or 95,000 miles of shoreline from entry by people who intend us harm. And border enforcement alone will not stop illegal immigration. Realistic reform efforts must increase the supply of legal workers to respond to labor needs, and decrease the demand for illegal workers by strengthening enforcement measures against employers. We also must find a sensible and humane way for people living illegally in the United States to earn their citizenship.