I have read quite a bit of the PPACA, although I admit that I have much better things to do with my time than read all ~2000 pages of it.
I did not mention all the government actions that are necessary to implement Obamacare -- those are irrelevant to my earlier point, which was that the text of the bill is only a small part of the rules and regulations that make up the law. If you think that the executive-branch costs to implement Obamacare are "light in comparison" to the NC voter ID bill, you are absolutely nutters.
Setting aside all the rest of the bill, the government-run health insurance exchanges are (arguably, but I believe) more costly and more invasive than that voter ID bill -- and there needs to be a different exchange for each state. Enforcement of the individual and employer mandates are also daunting tasks. For example, there is no legal mandate for employers to report which employees were offered a qualifying health care plan (and probably no authorization for HHS or any other government agency to require pro-active reporting), so deciding whether a person gets an insurance subsidy from the federal government requires some government drone to call the employer(s) in question and ask -- and some employee needs to get such a subsidy before the employer has to pay the employer mandate's penalty. (Did you ever wonder why the Obama administration wants to delay that particular provision even though the black letter of the law says it will take effect January 2014, or why it also wants to use the honor system to figure out who is eligible for those subsidies?)