Food industry advances in labeling fight

Some state and local governments require food makers, restaurants and grocery stores to post warnings about products containing ingredients regulators deem harmful. Those laws are often tougher than federal Food and Drug Administration rules or cover substances not regulated by federal law. The food industry has been pressing Congress and the federal government to ban such state laws ever since California voters approved what is known as Proposition 65 in 1986. Recently, it has made some progress.