Former Massachusetts governor Mitt Romney (R) says he is determined to repeal and replace President Obama’s national health care overhaul – even if it takes the support of a few Democrats to get it done.

View Photo Gallery: With the Republican presidential nomination secured, former Massachusetts governor Mitt Romney steps up his criticism of President Obama.

On a tele-town hall Wednesday afternoon with members of the National Federation of Independent Business, Romney fielded questions on the national health care law, his economic plan and other issues.

In response to one questioner who asked how he would tackle the 2010 health care law, Romney responded that he planned to issue an executive order on his first day in office granting a waiver to all 50 states.

“Most states would gladly sign on,” he told those on the call, although he said “some liberal states” might be less enthusiastic.

He added that he also planned on his first day in office to file legislation that would repeal the national health care law and replace it with “a series of actions that... help people that don’t have insurance but that don’t represent an imposition of the federal government.”

“If I have enough Republicans in the House and the Senate, a bill of that nature will be successful,” Romney said. “If we don’t ... well, we’re going to have to get a number of Democrats to come along with us. I think there are quite a few that have recognized that Obamacare is very unpopular in this country.”

Republicans currently control the House of Representatives and have passed several measures that would repeal the national health care law. But members of the Democratic caucus control 53 seats in the Senate to Republicans’ 47, effectively blocking any efforts to repeal and replace the law.

Also on Wednesday’s call, Romney reiterated his message to the business community that he, and not Obama, is on their side.

“I love you,” he told the NFIB members, later adding: “I’m anxious to make America once again the most attractive place in the world for business. ... We’re going to win this thing and take America back.”

And he urged the business owners not to shy away from talking to their employees about the presidential race.

“There’s nothing illegal about you talking to your employees about what you believe is best for the business,” Romney said.