San Francisco Chronicle U.S. giving up on overseas X-ray goal Five years after Congress set a deadline for requiring all U.S.-bound shipping containers to be X-rayed overseas for nuclear weapons, customs officials have all but given up on the goal. Customs and Border Protection officials scanned with X-ray or gamma-ray machines 473,380, or 4.1 percent, of the 11.5 million containers shipped in the fiscal year […]