Potential Republican candidates get in position

Don Folder asks former Alaska governor Sarah Palin to

(AP, ABC7) - Former Minnesota Gov. Tim Pawlenty is in Iowa, outlining key differences between his Medicare proposal and one introduced by Republican Rep. Paul Ryan of Wisconsin.

During a stop Monday in Waukee, Pawlenty, who's seeking the Republican presidential nomination, says his plan will change the way providers are paid. In an interview with The Des Moines Register, Pawlenty says it will pay producers for making people healthier and not just for the volume of patients they see.

Pawlenty told ABC's "This Week" that he would support Ryan's proposal to privatize Medicare only if his options were Ryan's plan or doing nothing.

Reporters were also on the trail of two darlings of the Tea Party movement. Michelle Bachmann read prepared remarks about the Constitution in North Hampton, New Hampshire.

“It was about defending and protecting liberty then, it's about defending and protecting liberty today, let us never forget that - live free or die,” Bachmann said.

On Friday, Bachmann made it clear that she was leaning toward a presidential run, saying on an Iowa public affairs program the she felt a "calling" to seek the Republican nomination.

A more casual Sarah Palin gave impromptu remarks outside the National Archives Monday, where as many tourists were taping her remarks as reporters. Palin told them her big bus isn't a sure sign she's in.

"This isn't a campaign bus,” she said. “This is a bus to be able to express to America how much we appreciate our foundation and to invite more people to be interested in all that is good about America.”

A local resident named Don Folder spoke up. "I would appreciate it if you would start really addressing some issues that deal with the African-American community as well. Because we are Americans, too," he told Palin.

"All right? And start attracting more African-Americans. You know, I mean, the rumor is that you're divisive but, man, include us as well,” he said.

From the archives it was on to Mount Vernon, where Palin and family got a private tour. They then headed to Ft. McHenry and the battlefields of Gettysburg.

Mitt Romney is expected to announce his intentions to seek the Republican presidential nomination on Thursday. Former Pennysylvania Senator Rick Santorum is expected to announce next Tuesday.