For the record, our current federal drug ban was started by Harry Anslinger (who, BTW, lied to Congress to get his legislation passed), and aided by William Randolph Hearst. Both were religious fundamentalists and holier-than-thou moralists.
Anslinger's morals were bendable though, since he supplied morphine to Senator Joseph McCarthy for years. Drug prohibition is only for little people.
Ditto the Prohibition.
One of the major forces behind Prohibition was the Woman's Christian Temperance Union.
Anslinger and Hearst might have been religious fundamentalists, but remember, there were plenty holier-than-thou religious fundamentalists in the 19th century, and yet there were no laws against gambling, drinking, or prostitution. The aguments for such laws, when they passed, were not religious ones (like, "let's save the souls of sinners against there will.") They were basically the leftist-type arguments--"the greater good of the society."