There is no basis in the Bible or even in the history of jurisprudence to suggest the use of recreational drugs is immoral, or evil. Like anything they could be harmful, but so are most prescirption drugs if used wrong.
You asked, "Where in the Constituion does it give the Feds authority to outlaw drugs?" Now you're changing the subject and saying there's no basis in the Bible or even in the history of jurisprudence.
Geez Louise. Make up your mind. I answer one question, complete with a U.S. Supreme Court cite, and now you want a passage from the Bible? Give me a break.
Even if I did cite the Bible, you'd probably scream about the separation of church and state and tell me that the U.S. isn't a theocracy!
Drug use is immoral. According to the Catechism of the Catholic Church:
2291 The use of drugs inflicts very grave damage on human health and life. Their use, except on strictly therapeutic grounds, is a grave offense. Clandestine production of and trafficking in drugs are scandalous practices. They constitute direct co-operation in evil, since they encourage people to practices gravely contrary to the moral law.