U.S. food safety strained by imports: AP

Billions of dollars' worth of foreign ingredients that Americans eat in everything from salad dressing to ice cream get a pass from overwhelmed inspectors, despite a rising tide of imports from countries with spotty records, according to an Associated Press analysis of federal trade and food data.

Well before contaminated shipments from China killed 16 cats and dogs and sickened thousands more, government food safety task forces worried about the potential human threat — ingredients are hard to quarantine and can go virtually everywhere in a range of brand products.