Like many teenagers, President George W. Bush dashed off to Cancun for spring break. Protected by a long and impenetrable fence and plenty of security guards, he met privately with the Mexican president and wealthy chief executive officers from both countries. Bush should have gone to the Arizona border where U.S. citizens really need a fence to protect themselves, their children, their animals and their property from the hundreds of illegal immigrants who tramp across their land every night. Bush thus gave the back of his hand to the 88 percent of Republican House Members who voted to secure our...