The U.S. Supreme Court has made their ruling on Obamacare, but in Congress, the fight to repeal and replace the controversial health care reform law is just beginning. OutFront tonight: Republican Rep. Nan Hayworth of New York.

Outfront tonight: Republicans in a corner over health care.

The Supreme Court battle may be over, but has the political and policy war just begun?

The House of Representatives has already scheduled a vote to repeal health care reform next week, a vote that will go nowhere considering the Senate is still controlled by Democrats. But Senate Republicans have pledged to follow through on the repeal it if they take back the Senate this fall.

The conservative base is firmly aligned against the health care law. Mitt Romney is campaigning on a pledge to "repeal and replace." We all saw the sign on his podium last Thursday.

But over the weekend, Senate Minority Leader Mitch McConnell was dismissive when asked what happens after repeal. But we have to ask – what would his party do about the 30 million uninsured Americans? When pressed for specifics, even Mitt Romney's own campaign has struggled to stay on message.

We get it. We know what you are not going to do. We know what you are against. But what are you for? After you repeal, what do you replace it with?

Mitt Romney has promised to take action on Obamacare on the first day of his administration if elected, and it's not the only "day one" promise that he's made.

But those promises are often easier to make than to keep. President Obama came close to fulfilling his "day one" promise to close Guantanamo Bay; he signed an executive order on day two to close it, but as we all know, the prison is still open three years later.

So does Mitt Romney's "day one" promise amount to more than campaign talk? Joining to discuss are McKay Coppins, a political reporter for BuzzFeed; Michelle Goldberg, senior contributing writer for Newsweek/The Daily Beast; and Alice Stewart, former spokeswoman for Rick Santorum, Mike Huckabee, and Michelle Bachmann.