U.S. Senators Elizabeth Warren and Ron Wyden have demanded detailed explanations from Cantor Fitzgerald after reports that the Wall Street firm explored creating a financial product enabling clients to profit if courts strike down former President Donald Trump’s tariffs. In a letter dated Aug. 14 to Cantor Fitzgerald Chairman Brandon Lutnick, the lawmakers cited possible conflicts of interest and insider-trading risks because Lutnick’s father, Howard Lutnick, now serves as commerce secretary and was involved in shaping the tariff policy. WIRED reported last month that Cantor’s investment-banking arm discussed transactions that would let investors wager on refunds companies could receive should the duties be ruled unlawful. Cantor Fitzgerald has denied the allegation, saying it does not facilitate trades linked to litigation outcomes. The senators asked whether anyone at the firm communicated with administration officials about tariffs or related lawsuits and requested a full list of such contacts. Warren and Wyden set an Aug. 27 deadline for the firm to provide records of internal deliberations, client solicitations and any executive-branch communications. The inquiry adds political and regulatory scrutiny to Cantor Fitzgerald as legal challenges over the tariff regime continue through the appellate courts.