Without congressional action, more than 7 million people who buy their health insurance on Affordable Care Act marketplaces would pay much higher premiums next year. Non-Hispanic Black people, non-Hispanic white people, and young adults would see the largest increases in the number of insured. Premiums would more than double, from $1,171 to $2,455, for people with incomes from 250% to 400% of the federal poverty level. And they would nearly double, from $4,436 to $8,471, for people with incomes above 400% of the federal poverty level. She also noted that it likely would raise the cost of insurance for those who do remain on the marketplaces.