The dietary-supplement industry is fighting a bid by U.S. Sen. John McCain to force it to disclose ingredients and register with the Food and Drug Administration. The Dietary Supplement Safety Act of 2010 would also strengthen recall authority of any dietary supplement the FDA finds to be hazardous. Opponents say subjecting manufacturers to increased reporting requirements could drive up prices and restrict the availability of vitamins and supplements. They contend the FDA is hostile to supplements because they don't go through the drug approval process - but that's an expensive process for natural substances that can't be patented. Tucson's Food...