Conservatives have tried repeatedly and unsuccessfully to repeal the Affordable Care Act, so now they're pushing to disable it by cutting off funding. Politically, it's not likely that they'll be able to gin up enough votes to pull it off. But if they did, the effect of defunding the ACA wouldn't be as simple as it sounds. What does it mean to defund Obamacare? Sen. Ted Cruz of Texas, 29 other senators and more than 100 House Republicans back legislation that would prohibit federal funds from being made available to "carry out any provisions" of the ACA.