Rhode Island Attorney General Peter Neronha joined another challenge to President Donald Trump’s administration on Thursday, aligning himself with 20 other states in a lawsuit against recent federal rules surrounding health coverage purchased via Affordable Care Act (ACA) marketplaces.

A group of Democratic attorneys general sued Thursday to block the implementation of portions of a U.S. Department of Health and Human Services rule set to go into effect next month that they say could lead to nearly 2 million people losing their health insurance.

House members in the San Joaquin Valley who voted for the bill defended their decisions, despite projections that some of their constituents will lose coverage.

"Traditional Medicare has roughly 20% cost-sharing," Sommers said. "For people who have both Medicaid and Medicare, Medicaid covers those costs. Also, traditional Medicare has no out-of-pocket cap, meaning someone can rack up tens of thousands of dollars of costs if they have a catastrophic illness, which Medicaid would cover if they have both."

The health policy nonprofit KFF estimated between 120,000 and 190,000 people in Colorado could lose their insurance, mostly through falling off the Medicaid rolls, over the next 10 years.

The massive bill is guided by spending requests from the White House. It will extend the 2017 Trump tax cuts, while cutting billions of dollars in social program funding. It’s been described as the largest cuts to social welfare programs since at least the 1990s, and according to some experts the most severe in modern history.

Lawmakers and some CMS officials have challenged the legality of deportation officials’ access to some states’ Medicaid enrollee data.