The Salt Institute was among 40 associations which have asked Congress to delay implemention of Customs and Border Protection's "10+2 Rule" until the agency can test a prototype to ensure it is workable. The group argued that the new data requirements for U.S.-bound container shipments would cost $20 billion, raising the cost of doing business and raising consumer prices. Rather than enhance homeland security, the measure "creates new security threats by greatly increasing the opportunity for containers to be tampered with" during the additional time needed for the more extensive clearing procedures, the letter avers.