The Unlawful Internet Gambling Enforcement Act of 2006 is the main US sports betting law that affects how gamblers can fund their betting accounts. The UIGEA bill makes it illegal for banks, credit unions, and payment services to knowingly process transactions related to unregulated gambling activities. While the UIGEA is mostly toothless, it does have the effect of causing credit and debit payments to sometimes be declined, which can be a nuisance for bettors who are trying to deposit quickly.