Almost 950,000 new customers selected health coverage on HealthCare.gov outside of the open-enrollment period after they became eligible due to changes such as losing their employer-provided insurance or having a baby, according to a government report on the federal health insurance exchange.

Despite concerns over the continued rise in health care spending and questions over what contributions President Barack Obama’s health care law will make to the federal deficit, a left-leaning group says what the government actually needs to do is spend more money on Obamacare.

This position was published Tuesday in a paper by the Urban Institute, which said the Affordable Care Act will not work as intended without another $559 billion over the next decade.