Elizabeth Warren is set to chair the Senate Banking Committee in January, gaining subpoena power to compel documents and testimony from crypto firms. Her stated early priorities include scrutinizing insider trading on prediction markets like Kalshi and Polymarket, consumer protection at crypto companies, and alleged conflicts of interest involving Trump and his family.

Warren has already pressed on these issues this year without enforcement power. In October, she and Republican Sen. John Curtis asked Kalshi and Polymarket how they prevent insider trading on election bets. She has criticized the Office of the Comptroller of the Currency for letting nine crypto firms, including Coinbase, operate like banks. In May, she asked the SEC to investigate whether World Liberty Financial (WLFI), the Trump family's crypto company, misled investors.

Her primary levers are lawmaking, hearings, and nominations. The CLARITY Act, a bill setting clear regulatory rules for crypto, failed a Senate vote 49-50 on September 15. Warren opposed it, stating "Donald Trump raked in more than $1.4 billion from cryptocurrency ventures, and this bill does nothing to prevent him from vacuuming up his next $1.4 billion in crypto profits." Any new version would need to clear her committee first, potentially extending industry uncertainty.

Public hearings and subpoenas create headline risk for named targets. WLFI trades near $0.047, close to the record low set on November 5, down about 61% in a year. Warren can also block Trump's regulatory nominees through her committee position.

Her power has limits. She cannot write rules alone, and the SEC and CFTC continue moving ahead on crypto under existing authority. Bitcoin trades at $75,599, down 5.95% in 24 hours, though no report ties that drop to Warren. Long-term holders of major coins will likely feel less impact than traders in politically exposed tokens or crypto stocks.