One of the most transformative aspects of Obamacare is that it conscripts state governments for the purpose of providing subsidized health insurance to their residents. Most red states have done their best to refuse, by declining to expand their Medicaid programs, and by passing up the opportunity to set up state-based insurance exchanges, through which Obamacare’s subsidies would flow. But a handful of Republican governors are doing their part to implement Obamacare. Arizona’s Jan Brewer, in particular, is proposing to do so in a way that sheds a lot of light onto the trap that Obamacare has set for state governments.