Gambling has been well-known for some time as a way to launder money. For example see this[1] official government report in the UK or this[2] which is US-specif

Gambling has been well-known for some time as a way to launder money. For example see this[1] official government report in the UK or this[2] which is US-specific but much less detailed. [1] https://www.gamblingcommission.gov.uk/print/The-money-laundering-and-terrorist-financing-risks-within-the-British-gambling-industry https://www.gamblingcommission.gov.uk/print/The-money-launde... [2] https://moneysmartathlete.com/betting-industry/money-laundering-and-sports-betting/ https://moneysmartathlete.com/betting-industry/money-launder...