Policymakers are considering ways to extend the enhancements made to Affordable Care Act premium tax credits that expire at the end of the year, which could cost $350 billion over the next decade. Any expansion of the credits should be offset by reducing other healthcare subsidies or preferences in the tax code, the largest of which is the exclusion for employer-sponsored health insurance (ESI) premiums, estimated to cost more than $5 trillion over the next decade due to reduced income and pa...