(CNN) - President Barack Obama will spell out his ideas for health insurance in a speech to Congress this week, his spokesman said Sunday without revealing any details.
"People will leave that speech knowing where he stands," White House spokesman Robert Gibbs said on the ABC program "This Week."
Asked if Obama would veto a final bill that lacks a public insurance option favored by Democrats but fiercely opposed by Republicans, Gibbs avoided a direct answer.
"We're not going to prejudge what the process will be when we sign it, as the president expects to do this year," he said, later adding: "I doubt we're going to get into veto threats" in Wednesday's speech.
The speech is considered Obama's opportunity to re-frame the health-care debate to try to reverse increasing public concerns over Democratic proposals.
Gibbs repeated Obama's support for a public health insurance option, which has become the most contentious issue in proposed legislation so far.
"The president believes it is a valuable tool to provide choice in competition," Gibbs said.
On the same program, a Democratic congresswoman said Republicans have no intention of supporting a health-care bill and only want to use the issue to damage Obama politically.
Rep. Maxine Waters of California said Democrats must push for the bill they want because Republicans don't want any bill to pass.
"Where's your bill? What have you come up with? What are you offering as an alternative?" Waters asked Republican Rep. Mike Pence of Indiana, another guest on the show. "It's bigger than health care. It's about President Obama, and the Republicans have decided to use this by which to bring him down."
Pence denied Waters' accusation, saying Republicans seek a less comprehensive and more affordable bill than the Democratic proposals currently in the House and Senate.
Americans are concerned about Obama's policies to expand government and increase spending, Pence said, adding that the Democratic health-care proposals will bring a government takeover of health care.
Asked to explain how, he said companies that currently provide health-care coverage as a benefit for workers would choose drop that coverage and pay a fine, shifting most people to the public insurance option.
"In this economy, there's no small business or large business worth its salt that isn't going to take a hard look at sending all of their employees to the federal government for their health insurance the minute a public option is available," Pence said.
In response, former House Majority Leader Tom Daschle, a Democrat also appearing on the show, denied that a public option would have a competitive advantage to drive private insurers out of the market.
"Congressman Pence's prediction, I think, is really baseless," Daschle said.
Updated: 6:05 p.m.