PANews reported on May 9th that, according to Cointelegraph, Massachusetts Senator Elizabeth Warren wrote to Meta CEO Mark Zuckerberg, requesting clarification on the company's stablecoin integration plans. Warren stated that Meta's lack of transparency is "deeply disturbing," given its previous plans to launch the global stablecoin Libra (later renamed Diem). She believes that Congress needs to understand Meta's stablecoin plans in the context of the U.S. government's push for digital asset market structure legislation.

Warren has requested that Zuckerberg provide detailed information on the stablecoin pilot program by May 20th, including the planned launch date, potential third-party stablecoins, and privacy measures. Meta launched USDC stablecoin payments to select creators in the Philippines and Colombia in April. Warren is a ranked member of the Senate Banking Committee, which is currently considering the CLARITY Act.