Canadian cannabis producers receive a lot more publicity than U.S. cannabis companies do. But even though marijuana remains illegal at the federal level in the U.S., companies operating in the states are generating a lot more revenue than most of their Canadian peers. Cresco Labs (OTC:CRLBF) and Green Thumb Industries (OTC:GTBIF) rank as two of the most successful U.S. cannabis companies. Which of these two marijuana stocks is the better pick for long-term investors? Here’s how Cresco and GTI stack up against each other.