The op-ed may be viewed in it's entirety here.
Two streams of thought collide throughout: federalism vs. strong federal interventionism.
"I favor giving each of the 50 states the resources and the responsibility to craft the health care solutions that suit their citizens best. ... Also, individuals are currently prohibited from purchasing health insurance across states lines, which reduces competition and makes many plans subject to expensive state benefit requirements. The federal government can open up these restricted markets. States could still regulate their insurance industries, but consumers across the U.S. would benefit from lower costs and greater choice."
Federal mandates to the states and federal interference with "expensive state benefit requirements" are not the federalism Romney spends much of the op-ed touting:
"I've opposed a one-size-fits-all health care plan for the entire nation. What we need is a free market, federalist approach to making quality, affordable health insurance available to every American. Each state should be allowed to pursue its own solution in this regard, instead of being dictated to by Washington. ... It is the genius of federalism that it encourages experimentation, with each state pursuing what works best for them. ObamaCare's disregard for this core aspect of U.S. tradition is one of its most egregious failings."
If some states decide that they want to require benefits in insurance plans which are more costly, the federal principle demands that they be allowed to do so.
Likewise with Romney's proposal to have the feds cap "non-economic damages" and encourage "specialized health care courts" in the states. These too are examples of a muscular, activist federal government steering the states in a predetermined direction.
Which is it, governor? Federalism, or federal meddling masquerading as leadership?