Any person who knowingly introduces any narcotic drug into a prison or detention facility shall be imprisoned not more than 10 years. For the purpose of this section narcotic drug means coca leaves, opium, cannabis, and every other substance neither chemically nor physically distinguishable from them; and other drugs to which the Federal narcotic laws may apply; and any drug found by the Attorney General of the United States or by the Commissioner of Health, after reasonable notice and opportunity for hearing, to have an addiction-forming or addiction-sustaining liability similar to morphine or cocaine, from the effective date of determination of such finding by said Attorney General or Commissioner of Health.