From the Form 990 of the National Cattlemen’s Beef Association, a federally recognized 501(c)3 public charity (exempt from taxes because of its devotion to the public benefit):

THE PRIMARY EXEMPT PURPOSES OF THE NCBA ARE TO 1) INCREASE CONSUMER DEMAND FOR BEEF THROUGH MARKETING PROGRAMS FOCUSING ON RESEARCH, EDUCATION, PROMOTION & INFORMATION. 2) PROMOTE THE COMMON BUSINESS INTERESTS OF THE BEEF INDUSTRY IN THE UNITED STATES. 3) CONDUCT CHECKOFF FUNDED ACTIVITIES IN COMPLIANCE WITH THE BEEF PROMOTION RESEARCH ACT AND ORDER DATED JULY 18, 1986.

The IRS isn’t going to figure out who’s doing good work for you.