But we would know that Republicans are lying about pre-existing conditions even if Trump hadn’t established such a remarkable record of serial dishonesty. For the fundamental logic of health policy says that if you want to protect pre-existing conditions, you either have to have the government provide health insurance directly, as it does with Medicare and Medicaid, or use a combination of strict regulation and subsidies to induce private insurers to offer coverage.
And if you do try to rely on private insurers, the necessary system of regulation and subsidies will, inevitably, look a lot like Obamacare.