The Republican Study Committee unveiled its blueprint for overhauling U.S. health-care if the Supreme Court cripples the federal health law in a decision expected later this month.

The official plan from the group of 170 House conservatives would repeal the entire 2010 Affordable Care Act starting Jan. 1, 2016. It would then replace the ACA’s centerpiece tax credits to help low and modest income people pay premiums and its requirements that insurers sell coverage to everyone regardless of their medical history with tax deductions and new insurance plans for people with pre-existing conditions.

Some Republicans, including 2008 presidential nominee Sen. John McCain, have long favored the idea, arguing it’s good tax policy, gives everyone the same choices, and doesn’t give people incentives to buy more expensive insurance.

The states that set up their own insurance marketplaces have nothing to lose in King V. Burwell, the big Supreme Court case that will be decided by the end of June. But that doesn’t mean those states are breathing easy.

With varying degrees of difficulty, all of the state-based exchanges are struggling to figure out how to become financially self-sufficient as the spigot of federal start-up money shuts off.

A group of House conservatives on Thursday unveiled the latest version of their ObamaCare replacement plan — intentionally steering clear of a contentious court decision that could throw the law into flux.

The repackaged plan from the Republican Study Committee would fully repeal ObamaCare while creating new tax deductions and incentives for people to use health savings accounts.

It does not address Congress’s biggest debate over ObamaCare this year: how Republicans should respond to the looming case, King v. Burwell, if justices decide to strike down subsidies for 6.3 million people.

By May 15, insurers had to file 2016 premiums with their state regulatory agencies and provide an explanation for rate increases exceeding 10 percent. On June 1, the Department of Health and Human Services released this information for 41 states plus the District of Columbia. Based on these filings, it appears that premiums for many Obamacare plans, particularly those with large market share, will rise substantially next year. In these states insurers requested double-digit increases for 676 individual and small group plans. These are on top of individual-market premium increases averaging 49 percent between 2013 and 2014.

According to the Centers for Medicare and Medicaid Services, these states include 7.9 million total exchange enrollees – nearly four out of every five people enrolled in exchange plans across the country. The double-digit rate increases HHS reported affect more than six million people in these states. These increases apply for Obamacare plans sold on exchanges as well as Obamacare plans sold off the exchanges. The weighted average premium increase for these six million people is 21 percent. Because the HHS list does not include insurers requesting double-digit rate hikes in large states such as California and New York, final numbers will be even higher.

Obamacare plans have disproportionately attracted older and sicker people. In their rate request filings, insurance companies generally said that claims have been far above what they expected. Moreover, Obamacare contained a large subsidy for insurers through the law’s reinsurance program – equaling $20 billion over three years. The reinsurance program is rapidly phasing out. The combination of these factors means premiums may continue to spiral upward as healthier people choose not to buy the mandate-laden, high-deductible, and expensive coverage.

Millions of Americans could lose Obamacare subsidies under a Supreme Court ruling this month, but many in the GOP don’t need their votes anyway.

That’s a major political calculus for Tea Party Republicans, who are likely to resist any efforts to extend the subsidies, even temporarily. They’re much more worried about angering their base by appearing to concede to Obamacare than whether a handful of constituents lose their subsidies.

Relying on any system to continue requires that such a system is sustainable. If it is not,
then, as the late economist Herb Stein has said, “it will stop.” In stopping, however, such a
system will impact those who rely on it and assume that it will continue.