And just WHERE is the authority granted to the government to protect people from bad drugs???
YOUR homework assignment is to READ the Constitution for the United States, starting with the Ninth and Tenth Amendments and then report back on the SPECIFIC SOURCE of FedGov's authorization to "protect" us from bad drugs or its specific source of authority to ban the possession or ingestion of ANYTHING.
Ninth and Tenth Amendments are dead letters. Deal with it.
Thank God for the Interstate Commerce Clause. Without it, we'd be Canada with nukes.