Why doesn't MLB ban chewing tobacco and dipping snuff at the major league level? It's already banned in the?

minors and in college? They have banned smoking in the dugouts, why can't they ban this nasty stuff? It causes terrible mouth cancer too, as the last HBO Real Sports showed. It's time to ban this. Also, a lot of young kids growing up are very impressionable and they wind up dipping because all of their favorite players dip. It's a terrible influence on kids, and also it's nasty to always watch them with dips and spitting. If the players want to dip outside of the ballpark, that's their own business, but it should be banned in the clubhouse and on the field. Like I said, it's already banned in the minors and college, so why should the major league guys be able to do it?