I’m pretty sure it’s still a federal crime in the US.

Here in the True North Strong and Free, weed is legalized at all levels of government and I can confirm that I can indeed buy weed with a Visa card. I can even buy it online and have it delivered to my door by the postal service. That got me through the pandemic.

Sorry your country kinda sucks about this, but it’s not really a credit card thing. CC companies suck for many reasons, but this isn’t one of them.