Speaking before a joint session of Congress "is a dramatic and open invitation to be pluralistic and open-minded and extend an olive branch to the other side," says Roderick Hart, dean of the College of Communication at the University of Texas.
• He must try to satisfy his liberal base, which favors a public option and generous subsidies to the uninsured, without alienating moderates who want private health care cooperatives or a public option only as a last resort.
"I think he will make clear that his bottom line is to get it done, one way or another," says Ron Pollack, executive director of the liberal health advocacy group Families USA. "If it can't get done on a bipartisan basis, he is determined to get it through the Congress this year."
President Obama's most used terms doing his address before Congress on health care reform.