The president said Monday that it would be "unprecedented" for the court to strike down the individual mandate and that he was "confident the Supreme Court will uphold the law."

"Ultimately, I’m confident that the Supreme Court will not take what would be an unprecedented, extraordinary step of overturning a law that was passed by a strong majority of a democratically elected Congress," Obama said. "And I'd just remind conservative commentators that for years what we’ve heard is, the biggest problem on the bench was judicial activism or a lack of judicial restraint — that an unelected group of people would somehow overturn a duly constituted and passed law. Well, this is a good example. And I’m pretty confident that this court will recognize that and not take that step."

Further emphasizing his desire to pivot from the bruising Republican primary to a general-election showdown with the president, Romney also accused Obama of looking for someone to "blame" for the shortcomings of his presidency.

“He’s trying to find someone to blame, some scapegoat that he can point to and say, 'This is the person responsible,' ” Romney said. “The truth is, the buck stops at his desk, and it’s time he realizes it.”

"‪The president is consumed with trying to find someone to blame for an extraordinarily failed presidency,” Romney added.‬

‪The former governor hopes that a string of victories in Wisconsin, Maryland and the District of Columbia Tuesday night will strengthen his grasp on the Republican nomination and increase pressure on his rival candidates to exit the race.‬ Romney said that there was evidence of prolonged primaries hurting Republican candidates in the past.

“The right thing for us is to get a nominee as soon as we can and begin to focus on Barack ObamaBarack Hussein ObamaMcCarthy: ‘No deadline on DACA’ Democrats will need to explain if they shut government down over illegal immigration Trump’s first year in office was the year of the woman MORE," Romney said.