Senator Elizabeth Warren intensified scrutiny of Elon Musk’s planned X Money launch by sending him a letter on the 14th with 13 questions and requesting answers by the 21st. The letter raised concerns about risks to consumers, national security, and financial stability, and specifically flagged worries about a business model offering a 6% annual yield. The new details add a formal deadline and scope to Warren’s earlier criticism, which had already focused on possible stablecoin use, FDIC protection limits, and oversight concerns tied to X Money.