WASHINGTON — A Republican plan to overhaul the Affordable Care Act landed with a thud on Tuesday in Colorado, as several GOP lawmakers said they were reserving judgment even as it came under attack from Democrats and hard-line conservatives.

The proposal prescribes a laundry list of changes to the 2010 health care package, better known as Obamacare. For Colorado, the most dramatic impact would be with Medicaid, a federal-state program that provides health insurance to disabled or low-income residents.

Under the Affordable Care Act, states were allowed to expand the number of residents they cover through Medicaid — leading Colorado to add an estimated 407,000 residents to the rolls.

The Republican plan would phase out this expansion starting in 2020 while changing the way the federal government pays for Medicaid by instituting a per-person cap — a switch that would mean “Colorado could expect less federal funding over the years,” according to the Colorado Health Institute, a local think tank.

Read the full story in The Denver Post.