[okie01]

I don’t think he will be able to roll back Obamacare, but he could probably make a deal with the Democrat Senate to reform the more unpopular parts and keep the rest.

Why not, I wonder? The House will definitely vote to repeal. If there is a GOP-majority Senate, every candidate that I'm aware of has pledged to vote for repeal and McConnell has said he'll get it done (and that he only needs 51 votes to do it).

With a GOP Congress, why wouldn't Romney be able to rollback Obamacare?

[radpolis]

Well, I am assuming that the Democrats are keeping the Senate.

And unless some Democrats break free and vote to overturn it, it will remain the law of the land,