To start selling his plan, reports CBS News chief White House correspondent Jim Axelrod, Mr. Bush picked about the friendliest audience he could find: soldiers at Fort Benning, Ga.
"The situation in Iraq is difficult, no question about it," Mr. Bush told about 300 soldiers and family members. "... It's important for our fellow citizens to understand that failure in Iraq would be a disaster for our future."
He said new brigades sent to Iraq will focus on quelling sectarian violence in urban areas, particularly Baghdad.
"They will help Iraqis take the lead in securing neighborhoods," Mr. Bush said. "They will have a clear and defined mission."
The mood was polite but muted, reports Axelrod. It was more somber than usual for a president talking to soldiers – perhaps because a surge means some of these troops will deploy to Iraq for their fourth or fifth tours.
While the president was taking his plan on the road Thursday, his top administration officials were out in force working to persuade a skeptical Democratic-led Congress to accept Mr. Bush's troop buildup as the last best chance for reversing Iraq's slide.
"All Americans know that the stakes in Iraq are enormous, and we all share the belief that the situation is currently unacceptable. On this we are united," Secretary of State Condoleezza Rice told reporters.
Regardless, the plan drew fierce opposition from congressional Democrats, but the Senate's top Republican to block any legislation expressing disapproval of the plan.
Democrats had already pounced on Mr. Bush's plan to increase troops in Iraq as a bad mistake that ignores public sentiment and the advice of top generals.
"In choosing to escalate the war, the president virtually stands alone," Senate Majority Leader Harry Reid, D-Nev., said in a Senate speech. However, he promised to give the plan careful consideration.
Many Republicans, too, are clearly tired of the war, which has cost more than
"At this late stage, interjecting more young American troops into the crossfire of an Iraqi civil war is simply not the right approach," said Rep. Ric Keller, R-Fla. "We are not going to solve an Iraqi political problem with an American military solution," he said in remarks on the House floor.
And Americans' opinions were not swayed very much by President Bush's Wednesday evening speech outlining his new strategy for the war in Iraq, according to a .
Fifty percent of those who saw the speech said they disapprove of the president's proposals, while 37 percent said they approve. Just one-third of those surveyed said they support Mr. Bush's call to send more than 20,000 additional troops to Iraq.
Following , 68 percent of Americans — the same number as prior to the speech — said they were uneasy about the president's ability to make decisions about Iraq.
"It's viewed as a temporary surge, but I think no one has a really clear idea of how long that might be," Gates said.
In a Thursday briefing, Sen. John McCain, R-Ariz., looked ahead.
"I do not guarantee victory or success with this new strategy," McCain said. "I do guarantee the consequences of failure. If we do fail, then there's going to be chaos in the region and I believe that we will pay an even heavier price in American blood."
Democrats still spoke out against the proposed buildup. Reid said Mr. Bush ignored the results of November's midterm elections that ended 12 years of GOP control of Congress, ignored the advice of the bipartisan Iraq Study Group and "a significant number of top generals."
"Putting more U.S. combat forces in the middle of a civil war is a mistake," Reid said.
Senate Majority Whip Dick Durbin, D-Ill., told CBS News' The Early Show that since the new Democratic-led Congress convened last week, "questions are now being asked of this administration that haven't been asked for almost four years."