Legislation to regulate nonprofit hospital charity care, one of the most hotly debated issues before California lawmakers last year, is back in 2014. Nonprofit hospitals give millions back each year to the communities they serve. But there's no standard definition of what's applicable and not — or how much should be given back in exchange for tax-exempt status. Over the years, unions and others have bristled at what they see as excess profits and high executive pay by nonprofit hospital chains.