The evidence strongly and consistently supports the statement that major U.S. banks have opposed specific crypto-related legislation. Several high-authority sources provide direct proof of this opposition.Direct evidence comes from multiple reputable news outlets (The Hill, MSN) that cite a primary source: a letter from the American Bankers Association (ABA) to senators detailing their opposition to provisions within a specific stablecoin bill. This is a clear example of a major banking group opposing a piece of legislation. A CNBC social media post further corroborates this by reporting that ABA representatives expressed opposition on Capitol Hill.Additionally, there is significant evidence of opposition to a specific regulation, the SEC's Staff Accounting Bulletin 121 (SAB 121). While a regulation and not congressional legislation, it is a key government rule affecting the industry. A U.S. Senator is cited as describing SAB 121 as "disastrous for the banking industry," and other news sources explicitly state that major banks are lobbying for changes to this rule.The most authoritative source, the Congressional Research Service (CRS) report, points to primary documents like lawsuits involving the Bank Policy Institute (BPI) and letters that detail the official positions of banking groups on crypto-assets, reinforcing the existence of formal, documented opposition. A law firm blog specializing in consumer finance also explicitly refers to letters from the BPI on crypto regulations.There is no conflicting evidence presented. The two primary sources from the BPI are procedural requests for time extensions and do not comment on the substance of the proposed rules, making them irrelevant to the claim rather than contradictory. The overall body of evidence from high-quality, relevant sources is cohesive and points directly to the truthfulness of the statement.