Mayweather broke SEC rules when he did not reveal that he had been paid a sum of $300,000 to promote a variety of cryptocurrency companies.
source https://www.google.com/url?rct=j&sa=t&url=https://www.dailyforexreport.com/floyd-mayweather-fined-cryptocurrency-promotional-fraud/&ct=ga&cd=CAIyGmM2Nzk3ODA2ZWViNjVjODI6Y29tOmVuOlVT&usg=AFQjCNGYyKIpKPTkV-xfGKRDbxGlaOZppA
