The day of close, the tenant on one side was arrested and his 80 lbs of marijuana (illegal in Indiana) was confiscated.

also, i'm sure even your internet based lease makes some mention of the tenants not allowing or participating in unlawful and illegal activities on the premises. as marijuana is illegal in most states, that is a violation of the lease.

Peculiar to Italy is the "Condono" legislation, whereby the State "condonos" the urban sins of its citizens, who have constructed, enlarged or modified buildings, without having obtained the necessary approvals from the local Council.

Recreational marijuana is now legal at the state legal in Washington and Colorado.

That often causes their charges to be enhanced to felonies.You might also find that cultural norms are changing.While I am extremely anti-drug use, you might be surprised that the majority of people in many states thinks it is insane that someone would hold marijuana use against someone. 

I'm concerned about my existing holdings however, the anti-marijuana legislation imposed by Nevada, Yuba, and surrounding counties will crush the cash economies and significantly hurt my renter pool, as well as my ability to flip vacant land here.  

There is still a casino on every corner and now with Medical Marijuana there is a "caregiver" on every corner.

It doesn't do you much good to have a tenant with enough income who pays the rent on time and does $15,000 in damage to your unit (yes, it is possible to do that much damage) .Also, I do not want that "sufficient income" to come from the sale proceeds of a marijuana grow operation or a meth lab.

I'm putting the quotes around service dog because the tenant wasn't blind, he had emotional problems or some other nonsense.I'm just wondering if medical marijuana users would be able to claim the same horsebleep?

I personally think alcohol is more destructive than marijuana.