The Arizona Legislature began its 2018 legislative session last week, and lawmakers already have several marijuana bills to consider. Unfortunately, many would undermine the existing medical marijuana program. HB 2068 would allow prosecutors to determine whether individuals on parole or probation can access medical marijuana, despite a 2015 state Supreme Court decision that held medical marijuana could not be withheld from patients under those circumstances. Another bill, SB 1060, would make it a…