Can I purchase marijuana in your shop with an American state issued id or passport?

Yep

I've an out of state id and never had a problem

Yep. Great, super friendly shop to visit too!

Just as long as you are 21 and have that identification

You only have to prove your age so I would say yes

Yes

Passports work too but have to be united state issue

Yes, and it can be any state ID.