CNBC's exclusive interview with CFTC Chairman Michael Selig has him saying major crypto exchanges and new entrants are lining up for the agency's federal oversight framework as hopes fade for the stalled 'Clarity Act.' The CFTC proposed rules in October to prevent abuse and codify crypto transactions, and Selig says the agency will defend its exclusive jurisdiction over prediction markets up to the Supreme Court. Its new rules could face Democratic scrutiny after the 2026 midterms.