The next time you pass through an airport and have to produce a photo ID to establish who you are and then must remove your shoes, take off your belt, empty your pockets, prove your laptop is not an explosive device and send your briefcase or purse through a machine to determine whether it holds weapons, think about this: In a single day, more than 4,000 illegal aliens will walk across the busiest unlawful gateway into the U.S., the 375-mile border between Arizona and Mexico. No searches for weapons.
