Which is irrelevant to things already passed into law.
First of all I have serious doubt Romney would have pushed for the tax brackets jacked up.
If the congress passed the bill anyways, he could veto it.
Could and would are two different things; Romney's a progressive, so I don't think that he'd have very much of a difference on tax issues than Obama. (It'd be like arguing over whether 55.1% or 55.2% is good as a tax rate.)
There is something known as Executive Order. Romney talked incessantly about issuing exemptions to all 50 states from Obamacare. That would starve the beast in its tracks.
That's the "exemption voucher" I mentioned. Again it's not a good idea to hand that sort of power to the President, any president.
Travel the middle-east like I have (I was born and raised in nearby country) and you will educate yourself why military must be kept so strong, no one would dare start a war against us. The jihadists can only be stopped if the regime in the country where they are allowed to operate and train is in morbid fear of US military and intentions of the commander in chief.
I was deployed to Iraq; I still believe that it would, ultimately, be better if we did not have a regular Army. (Think of it this way I want states nervous enough to push militia enrollment and training, not merely allow it, and I want there to be a rifle behind every blade of grass.)
Getting back to the main point, I was a fierce supporter of Herman Cain during the primaries because he had the best chance to defeat the community organizer from Chicago. When he dropped out, I was for Perry and when he fizzled, I was for Newt. When Romney got the nomination locked up, I did not abstain in November.
I didn't abstain either, I voted for the man I thought best-suited to the job: Gary Johnson.
He did an excellent job as governor in my state, enough that he got re-elected as a Republican while the state was solidly democrat, and left office with a surplus. Here's a video.
Enjoy the rim job Obama is doing on you for 4 more years.