What are arguments in favour of not banning the chinese meds?

Sound politics: Some of them are real medicines, and the livelihoods of practitioners -- who offer comfort to people who may have little else -- depend on them. Many such pills are not what they are supposed to be. However, if they were banned, there would be a huge political outcry, an enormous amount of pricey litigation, and the usual cast of characters complaining about government interference. Caveat emptor.