Despite all the talk of homeland security, sneaking into the U.S. is scandalously easy—and on the rise. Millions of illegal aliens will pour across the U.S.-Mexican border this year, many from countries hostile to America. TIME looks at the damage, the dangers and the reasons the U.S. fails to protect itself 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...