Top Wall Street executives from central banks like JPMorgan, Citigroup, and others are gearing up to alarm lawmakers about proposed regulations. These changes might shake the very foundation of the economy, leading to increased costs for services or even the cessation of specific offerings.

At the heart of their concern lies the “Basel Endgame” proposal, a game-changer in how banks calculate their loss-absorbing capital. The CEOs are poised to present their case before the Senate Banking Committee, asserting that this proposal could spike capital requirements by a staggering 20% to 25% for the largest banks. Jamie Dimon of JPMorgan is particularly vocal, warning that the proposal could spark fundamental economic shifts not thoroughly studied by the Federal Reserve.

But it’s not just about Basel; these leaders also raise red flags about additional consumer regulations, citing an “alarming” absence of robust economic analysis. The debate between safeguarding the banking system from unforeseen shocks and preventing potential economic upheaval takes center stage in this congressional showdown.

Amidst the fray, regulators defend the necessity of these rules, especially following the collapse of three banks earlier in the year. However, dissenting voices like Citigroup’s Jane Fraser caution against overreacting to isolated incidents, fearing unintended consequences that could disrupt the financial system.

This hearing is an opportune moment for the CEOs to sway moderate Democratic senators, painting a picture of potential lending constraints that could adversely impact small businesses and consumers.

James Gorman of Morgan Stanley weighs in, branding the Basel rules as “wholly unnecessary” and detrimental to U.S. economic competitiveness. Meanwhile, Wells Fargo’s CEO, Charlie Scharf, expresses confidence in the bank’s ability to tackle regulatory issues, striving to lift the asset cap still in place due to past scandals.

As the dialogue unfolds, the future of banking regulations and their ripple effects on the economy remain uncertain. Will the CEOs’ warnings resonate, or will regulators push ahead with measures they believe will fortify the financial landscape? This high-stakes debate between Wall Street and lawmakers carries the potential to reshape the very fabric of the economy.