In the past, regulatory crackdowns on stablecoins often ran into the thick walls of offshore companies. This time, however, the U.S. Congress has chosen to bypass the shell and aim its audit directly at a homegrown Wall Street custodian holding hundreds of billions of dollars in U.S. Treasuries.

【U.S. Senate investigative panel targets Cantor! Probing Tether’s hundreds of billions in Treasury reserves and shadowy money flows】
According to BlockTempo and the latest public letter cited by CoinDesk, Senator Richard Blumenthal, the senior Democrat on the U.S. Senate Permanent Subcommittee on Investigations (PSI), formally wrote to Cantor Fitzgerald CEO Brandon Lutnick on October 8, demanding a full account of the Wall Street financial institution’s business dealings with Tether, the world’s largest stablecoin issuer, as well as details of its custody of Treasury reserves and its anti-money laundering (AML) compliance procedures. Notably, the current Cantor CEO’s father is Howard Lutnick, the current U.S. Secretary of Commerce, lending the investigation added sensitivity around financial regulation and the revolving door between business and government.

At the heart of the investigation, the congressional letter points out that although Tether operates through an offshore-registered entity, the vast majority of its reserve assets—more than $100 billion in U.S. Treasuries—are located in the United States and held in custody by Cantor. The Senate investigative panel previously issued a report questioning whether USDT was being used in Iran’s shadow banking system and networks for evading international sanctions. This time, it is demanding that Cantor specify what substantive due diligence steps it has taken to prevent illicit finance. The letter also seeks details of financial transactions, including Cantor’s $10 million donation to the political action committee Fellowship PAC in April this year. The move marks a significant shift in U.S. congressional oversight of stablecoins: from overseas issuers to the core institutions custodying their dollar reserves.

【Review of settlement channels and reserve accumulation: a reassessment of Bitcoin (BTC) liquidity pricing】
What does this mean for readers? As Tether’s key Wall Street intermediary, Cantor Fitzgerald could face substantially tighter liquidity channels for the hundreds of billions in Treasuries it custodies, as well as stricter redemption reviews, if congressional subpoenas or hearings are pursued. For the broader crypto market, USDT has long accounted for more than 70% of trading settlement volume. If compliance hurdles at the reserve-custody level increase, that could directly constrain the pace at which offshore dollars expand into crypto. Yet from an asset perspective, this external friction around trust highlights Bitcoin’s native value as an asset that requires no counterparty guarantee.

Looking at market activity and value capture, Bitcoin (BTC) is currently trading around $82,100 on Binance’s spot market, with 24-hour spot trading volume exceeding $1.7 billion, demonstrating relatively strong resilience to macroeconomic pressures. Past on-chain activity during stablecoin regulatory storms shows that risk-averse buyers often do not move directly back into fiat; instead, they quickly turn to Bitcoin, the most liquid asset, as a store of value. Meanwhile, Tether’s reserve policy of regularly allocating some of its Treasury interest income to buy more Bitcoin could also see its future purchase pace directly affected by the intensity of congressional scrutiny.

【Key factors to watch】
As the compliance storm around U.S. congressional scrutiny of stablecoin custodians unfolds alongside a market recovery, two objective signals can help verify the market structure going forward:
First, the key fundamental signals are stablecoin premiums and discounts on exchanges and changes in market share. If intensifying regulation leads to a sustained discount in USDT on exchanges while Bitcoin’s market dominance (BTC.D) rises significantly, it would indicate that capital is rotating toward lower-risk assets, with spot demand concentrating in Bitcoin. Conversely, if offshore stablecoins face no redemption friction and their premiums and discounts remain stable, the market may view the issue largely as policy noise during an election cycle.
Second, watch whether Bitcoin can build a solid trading base in the $81,500–$82,000 range. If it can continue to absorb macroeconomic headwinds above this support zone, it may move higher to retest resistance at $83,500–$84,000. If a sudden escalation in regulation drives the price below the previous low of $80,500, the market could retest liquidity lows in the $78,800–$79,200 range.

These are personal views and an informational summary, not investment advice. DYOR.

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