W.T. Mayhall is one of the Good Old Boys who proposed this bill. He is from Mississippi:
Representative Mayhall is a member of Horn Lake Masonic Lodge 617, Horn Lake Chamber of Commerce, Southaven Chamber of Commerce, and the Civil War Preservation Trust. (bold mine)
They outlawed racial segregation in the South, years ago and he probably misses it. Since they can't do that anymore, a new from of restaurant banning would probably give him and his buddies a nice, warm, nostalgic feeling of discrimination by continuing their proud tradition of keeping a segment of the population out of restaurants.