The Trump campaign has doubled down on Health Savings Accounts, the health-insurance-as-401(k) product the Affordable Care Act was supposed to extinguish but which was specifically saved by President Obama in order to provide Americans with a health insurance option they could actually afford. The ACA specifically delegates the important job of defining what is and what isn’t health insurance to the Department of Health and Human Services. A President Trump could use that authority to greatly expand the role of HSAs in the exchanges and in entitlements, limited only by changes in budget such revision might entail.

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