<blockquote>According to legal precedent, the Fourth Amendment — the right to be free from unreasonable searches and seizures — does not apply along the border. By the way, the government contends the Fourth-Amendment-Free Zone <a href="http://www.wired.com/threatlevel/2008/10/aclu-assails-10/">stretches 100 miles</a> inland from the nation’s actual border.</blockquote>
via <a href="http://www.wired.com/threatlevel/2013/02/electronics-border-seizures/">DHS Watchdog OKs 'Suspicionless' Seizure of Electronic Devices Along Border | Threat Level | Wired.com</a>.