Ever since John D. Rockefeller started handing out shiny new dimes to children to enhance his robber baron image, rich people have been trying to portray themselves as concerned about average people as part of a ploy to protect their own privilege. Sometimes we see through it and sometimes we get bamboozled, but this time we really got bamboozled.
The Koch brothers don't want to reform the federal criminal code to help average Americans stay out of jail for smoking pot; they want to reform the federal criminal code to protect fat-cat polluters. It really is as simple and dirty as that.
Welcome to life in the best democracy money can buy.