Association 2014 Total U.S. Chamber of Commerce $90,170,000 National Association of Realtors $54,980,000 Institute for Legal Reform $33,160,000 American Medical Association $18,790,000 National Association of Broadcasters $18,440,000 American Hospital Association $18,290,000 National Cable and Telecommunications Association $17,460,000 Pharmaceutical Research and Manufacturers of America $16,510,000 Business Roundtable $14,840,000 National Association of Manufacturers $12,410,000 American Chemistry Council $11,364,703 CTIA—The Wireless Association $9,540,000 America's Health Insurance Plans (AHIP) $9,200,000 American Petroleum Institute… Read More