Nonprofit ethics group Campaign for Accountability (CfA) sent a letter to U.S. Senators Elizabeth Warren and Sherrod Brown on Nov. 9 to present them with information on the alleged use of cryptocurrency in money laundering. The letter discussed the Tron blockchain and stablecoin issuer Circle in particular.

In the letter signed by CfA executive director Michelle Kuppersmith, it is alleged that USD Coin (USDC) issuer Circle has extensive ties to both Justin Sun’s Tron Foundation (TRX) and major Wall Street investors such as Goldman Sachs, Bank of New York Mellon and Blackrock.

Kuppersmith called Circle’s connections to Wall Street “surprising” in light of its supposed lack of…

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