The head of the U.S. Food and Drug Administration asked Congress for more money on Thursday to address food safety, security and inspections, but said the agency is working hard to control costs and is a “true bargain” for Americans. “We have made belt-tightening a priority,” FDA Commissioner Margaret Hamburg told a Senate Appropriations subcommittee. Among FDA’s priorities are new food safety regulations, improving inspections of imported goods, and developing countermeasures against chemical and biological threats.