More than 150 trade groups and professional societies reported spending at least $1 million on lobbying in 2015. CEO Update analyzed lobbying disclosure forms filed with the Office of the Clerk of the U.S. House of Representatives. Click the arrow to see more groups and their spending. Association 2015 spending Change from 2014 U.S. Chamber of Commerce $62,370,000 -30.8% Nat'l. Assn. of Realtors $37,680,000 -31.5% American Medical Assn. $27,890,000 48.4% Institute for Legal Reform, U.S. Chamber $21,530,000 -35.1% Business Roundtable $19,250,000 29.7% Pharmaceutical Research and Manufacturers of America $18,320,000 11.0% American Hospital Assn. $18,220,000… Read More