Local-perspective decision-making and "50 laboratories" are usually the general line for that kind of thing, with efficiency and consistency being the arguments

Local-perspective decision-making and "50 laboratories" are usually the general line for that kind of thing, with efficiency and consistency being the arguments in favor of federal control. Funnily enough, the states with Republican governors which usually push the local line didn't build their own exchanges, while the states with Democratic governors who are usually friendlier to federal control tended to build one. Politics.