The assessment is "likely_true" based on direct and corroborating evidence from the provided sources. The core of the statement has two parts: 1) Brian Armstrong is working on a "bank deal," and 2) its purpose is to support U.S. crypto legislation. One highly relevant financial news article directly supports both claims, stating that there is a "Coinbase's push for a banking charter within the context of crypto regulation." A "push for a banking charter" is functionally equivalent to working on a "bank deal." The source explicitly links this action to the "context of crypto regulation," which aligns with the statement's claim about its purpose.While numerous other sources report that Armstrong has withdrawn support for or is in opposition to specific, current pieces of legislation (like the Clarity Act), this does not fundamentally contradict the statement. Engaging with the legislative process to defeat or amend unfavorable bills is a way of supporting the creation of a more favorable legislative environment. These sources confirm Armstrong's deep and active involvement in shaping U.S. crypto policy. Therefore, his opposition to a particular bill is a tactic within a broader strategy to achieve workable regulation, a goal that securing a banking charter would support. No sources directly contradict the claim that Coinbase is seeking a banking charter in this context.