In the airline industry elevation = height above ground and altitude = height above sea level. Altitude is used to calculate air pressure, elevation is used to make sure you don't crash into mountains.
Marijuana is a dangerous and addictive drug that has many consequences to using it. People debate whether it should be legalized or not due to its pros and cons. Marijuana should not be legalized because it is a gateway drug to the legalization of other drugs and has many bad effects on the users of it.
Currently there are no state programs of legal access to marijuana for medical purposes. In 1996, California and Arizona passed statewide voter initiatives that legalize marijuana for medical purposes in those states. The Arizona initiative was overturned by the state legislature.