No problem. 'Marijuana Companies' (mostly Canadian, where it is legal) are listed on the Stock Exchange for Investors to buy. Americans are already convinced 'Marijuana' is a growth industry and are putting their Capital where their mouth is.
"MJ®, The World’s Largest Cannabis ETF, Reports 1,000th Creation Unit"
https://www.businesswire.com/news/h...est-Cannabis-ETF-Reports-1000th-Creation-Unit
"Topics being debated during the presidential election, such as the legalization of cannabis in several states, have led to increased investor demand evidenced by the increased daily trading volume. Shortly after the Vice-Presidential debate, MJ® saw trading volume increase three times1 its normal activity, 750,000 to nearly 2.4 million. MJ® currently has 50 million shares outstanding. Since the beginning of Q4 2020, the Fund is up 10.66%."