U.S. banking groups are lobbying to amend the GENIUS Act, fearing its current form could allow crypto exchanges to offer interest-bearing rewards on stablecoins, potentially leading to $6.6 trillion in deposit outflows from traditional banks. This indicates a growing competitive threat from decentralized finance (DeFi) to traditional banking, suggesting potential headwinds for Big Bank stocks and tailwinds for crypto assets if the amendment fails. Investors should monitor regulatory developments around the GENIUS Act for impacts on both sectors.