Recently implemented or proposed policy changes to the Affordable Care Act by Congress and the Trump administration, including the elimination of the individual mandate penalty in 2019, could affect enrollment and affordability in the individual health insurance market. With Commonwealth Fund support, RAND researchers analyzed the potential impact of several options to expand enrollment and bring coverage to more Americans who purchase insurance on the individual market. These options include increasing the generosity of tax credits, extending credits to people with higher incomes, and offering reinsurance to insurers.