WASHINGTON — As Democrats steadily climb in their potential to take back a Senate majority in the upcoming midterm elections, Senator Richard Blumenthal is aggressively ramping up his scrutiny of the financial ties binding Wall Street fixture Cantor Fitzgerald to Tether, the world’s leading stablecoin issuer.
Blumenthal, serving as the top Democrat on the Senate Permanent Subcommittee on Investigations, is demanding comprehensive answers regarding the extensive partnership that facilitates the management of Tether’s massive U.S. reserves. With political momentum shifting ahead of November, Blumenthal and his progressive colleagues may soon wield significantly more investigative authority and subpoena power to probe the intersections of traditional finance and the rapidly expanding digital asset industry.
The Connecticut lawmaker initiated the latest phase of this oversight on Thursday by dispatching a formal inquiry letter to Brandon Lutnick, the CEO of Cantor Fitzgerald. Brandon Lutnick took the reins of the financial services firm after his father, Howard Lutnick, stepped down from leadership to join the administration of President Donald Trump as the U.S. Secretary of Commerce. The high-profile connection between the executive branch and the upper echelons of Wall Street has added an extra layer of political sensitivity to the ongoing congressional examinations.
Blumenthal has spent recent months deeply scrutinizing the role that stablecoins—specifically Tether’s USDT—play in global illicit finance, notably within Iran’s shadow banking networks and various schemes designed to bypass international economic sanctions. His latest correspondence explicitly flags the exceptionally lucrative business relationship between the issuer of the world’s dominant stablecoin and the U.S. financial firm responsible for holding and managing its vast reserves.
"Just as Tether has made untold millions in interest and investments from the stablecoins used in these illicit activities, so has Cantor Fitzgerald profited from its relationship with Tether," Blumenthal wrote in the strongly worded letter. The senator pressed the younger Lutnick for detailed explanations concerning his company’s internal compliance, anti-money laundering protocols, banking safeguards, and sanctions enforcement, while also probing the historical involvement of Howard Lutnick during his tenure at the firm.
Despite officially operating out of El Salvador, Tether maintains the vast majority of its financial backing and asset reserves securely within the United States under the direct custodianship of Cantor Fitzgerald. This operational duality has long frustrated lawmakers and financial regulators who struggle to apply conventional jurisdictional oversight to offshore cryptocurrency entities that rely heavily on onshore institutional infrastructure.
"While Tether claims to operate out of El Salvador, the vast majority of its assets reside in the United States under your custodianship," the Connecticut lawmaker wrote in his official communication. "As Congress considers how to best regulate digital assets, your partnership with Tether will provide important insights into the inner workings of this industry."
Among the numerous specific demands outlined in the congressional letter, Blumenthal asked for a transparent account of the firm’s internal reviews. "Please describe all steps Cantor Fitzgerald has taken to investigate allegations that Tether’s stablecoin has been used in illicit finance and money laundering, including within Iran’s shadow banking network and for purposes of Russia sanctions evasion," the letter states.
To date, neither Cantor Fitzgerald nor Tether has publicly responded to repeated requests for comment regarding the congressional inquiry, which were sent directly to designated corporate spokespeople representing both entities.
The renewed pressure from Capitol Hill highlights the precarious balancing act currently facing the cryptocurrency industry as it attempts to institutionalize its footprint within traditional U.S. markets. For months, crypto advocates and firms have pushed for clearer regulatory frameworks in Washington, hoping to secure legislative legitimacy. However, high-profile investigations led by vocal critics like Blumenthal and Senator Elizabeth Warren threaten to expose potential vulnerabilities related to illicit capital flows, regulatory arbitrage, and systemic financial risks.
While Blumenthal and other aggressive congressional critics of the crypto sector have spent the current legislative session constrained by their status as members of the minority party, a shift in control of Capitol Hill could dramatically alter the political landscape. Operating as members of the minority limits a lawmaker’s ability to unilaterally issue subpoenas, compel executive testimony, or force federal agencies to hand over sensitive documents.
Securing a Democratic majority in the Senate following the November elections would instantly change that dynamic. If Democrats manage to pick up several key seats, lawmakers like Blumenthal would find themselves seated at the helms of powerful committees equipped with full subpoena power, enabling them to legally compel reluctant corporations and executives to cooperate with sweeping investigations.
Current market indicators and political forecasting platforms suggest that Democrats enjoy a growing probability of achieving precisely that outcome. Prediction markets currently indicate that Democrats hold a better-then-even chance of retaking the Senate majority. Data compiled by Kalshi places the odds of a Democratic Senate takeover at 61%, while rival platform Polymarket assesses the likelihood slightly higher at 64%. These figures represent a notable tightening of the political race compared to predictions from several weeks prior, when the Senate control outlook hovered closer to an even split.
The political outlook in the U.S. House of Representatives appears even more favorable for the Democratic party, according to the same forecasting platforms. Both Kalshi and Polymarket currently estimate the likelihood of a majority shift in the lower chamber at well over 90%, pointing toward the strong possibility of a divided government or a complete legislative trifecta shift if Senate gains also materialize.
As election day draws closer, the intersection of cryptocurrency market mechanics, high-level political appointments, and congressional oversight continues to intensify. Whether the upcoming political cycle results in a restructured Congress or leaves current committee dynamics intact, the inquiries into how Wall Street institutions partner with offshore digital asset giants will remain a central battleground for financial regulation and national security oversight in Washington.
