As artificial intelligence spreads across the U.S. economy, Sen. Mark Warner wants to rein in AI agents, the autonomous bots that can complete tasks for consumers, such as booking trips and  shopping online .  The Virginia Democrat is supporting a first-of-its-kind draft  bill  — the Artificial Intelligence Access, Gatekeeper Exchange and Nondiscriminatory Transfer, or AI Agent, Act — that proposes privacy and security measures that he said would protect consumers and businesses from potential