-- edited to add citations --
Spent about 10 seconds finding these using Brave search. For folks who can't resist snarky comments, you have to admit it's strange that this is not at least acknowledged amidst a state-by-state push for legalization.
https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2424288/
>> "There is now reasonable evidence from longitudinal studies that regular cannabis use predicts an increased risk of schizophrenia and of reporting psychotic symptoms. These relationships have persisted after controlling for confounding variables such as personal characteristics and other drug use. The relationships did not seem to be explained by cannabis being used to self-medicate symptoms of psychosis."
https://jamanetwork.com/journals/jamapsychiatry/article-abst...
>> "The results from these longitudinal analyses show the proportion of cases of schizophrenia associated with cannabis use disorder has increased 3- to 4-fold during the past 2 decades, which is expected given previously described increases in the use and potency of cannabis."