Responsible US contact research means navigating a fragmented landscape. The US lacks a comprehensive federal privacy law; protection comes from sector-specific rules and state statutes. For phone-based outreach, the Telemarketing Sales Rule requires consent records with request wording, purpose, and date . State mini-TCPA laws add stricter requirements—Texas SB 140, effective Septemb... https://www.b2cdatabase.co/usa-telegram-database/