Yep, it's still the law.
The big irony of the House Republicans'
determination to shutdown the government in order to defund or delay or decapitate (whatever today's plan is) Obamacare: enrollments in the program will start tomorrow, no matter what. Even if government shuts down, Obamacare
keeps on going.
“On Tuesday, about 40 million more Americans will be able to finally buy quality, affordable health care, just like anybody else,” Obama said on Friday. The new health insurance exchanges, he said, “will be open for business on Tuesday no matter what — even if there’s a government shutdown. That’s a done deal.” [...]
How is that possible? Here’s a guide to how it will work—and what we might see on Tuesday:
Many pieces of the health care law, the Affordable Care Act, aren’t tied to the annual spending bills. Much of the health law is mandatory spending—a kind of fiscal autopilot that’s not part of the annual appropriations battle that has Congress tied in knots. The mandatory components of the health law include the subsidies to help people buy private health plans as well as the expansion of Medicaid in many states. Both of those functions will be handled through the new health insurance markets or exchanges.
Because those programs are mandatory, the Department of Health and Human Services has a lot of leeway to say whether Obamacare activities can continue—and HHS officials have made clear they’re going to use it.
Not that a little thing like reality is going to stop Republicans at this point. They're on a mission to destroy, and don't particularly care what's in their path.