Understanding restaurant vaping requires separating what is known about vaping from assumptions that are often made about these products. Federal tobacco rules establish a national baseline, but states, territories, and local governments can adopt additional requirements concerning e-cigarette sales, use, licensing, taxation, displays, and other matters. The U.S. therefore does not have one completely uniform vaping policy. Earlier CDC assessments documented substantial state and local differences, including policies affecting indoor use, retail licensing, self-service displays, minimum sales age, and taxes. The exact legal status of a product or practice can change over time as legislatures and regulators adopt new measures. For that reason, state-specific questions should be checked against current official law and agency guidance. A careful discussion should distinguish federal rules from state and local requirements and should distinguish established findings from questions that remain under study.
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