The U.S. Senate Committee on Banking, Housing and Urban Affairs published a letter from Sen. Elizabeth Warren, its ranking member, requesting information from the National Association of Insurance Commissioners on how state regulators are assessing and addressing risks from growing ties between private investment firms and insurers. The request seeks to identify gaps in state oversight and whether additional state or federal safeguards are needed to protect policyholders from excessive risk, affiliated investments and potential conflicts of interest. Warren cited reports of Department of Justice and Securities and Exchange Commission investigations into how multibillion-dollar loans linked to Mark Walter or TWG Global reached the balance sheets of Walter-owned insurers through a third entity. She also noted that life insurers’ private credit investments increased from USD 386 billion in 2014 to USD 849 billion in 2024, raising concerns because such assets can be illiquid, difficult to value and harder to sell during financial stress. The letter asks what assessments and actions the NAIC has undertaken in response to the reported transactions and the insurance sector’s broader private credit exposure.