Nukes Over the Border

Red Satellites points us to an article that lets us know its not all that tough:

WASHINGTON (AP) -- Undercover investigators slipped radioactive material - enough to make two small "dirty bombs" - across U.S. borders in Texas and Washington state in a test last year of security at American points of entry.

Radiation alarms at the unidentified sites detected the small amounts of cesium-137, a nuclear material used in industrial gauges. But U.S. customs agents permitted the investigators to enter the United States because they were tricked with counterfeit documents.

Very curious disclosure on the verge of the present immigration debates.