WASHINGTON (CNN) -- As President Barack Obama presses his case for a strike on Syria, a new national survey shows him swimming against a strong tide of public opinion that doesn't want the U.S. to get involved.
The CNN/ORC International poll released Monday shows that even though eight in 10 Americans believe that the Bashar al-Assad regime gassed its own people, a strong majority doesn't want Congress to pass a resolution authorizing a military strike against the regime.
More than seven in 10 say such a strike would not achieve significant goals for the U.S. and a similar amount say it's not in the national interest for the U.S. to get involved in Syria's bloody two-year long civil war.
The poll comes at the start of a pivotal week for the president. The Senate is expected to take up the resolution after returning from its month-long summer recess on Monday and Obama does a round of interviews with the major broadcast and cable news outlets. Wolf Blitzer's interview with Obama will air Monday on "The Situation Room" at 6 p.m. ET.
Amid a full-court press of briefings by White House officials, Obama will travel to Capitol Hill on Tuesday to make his case with lawmakers hours before he tries to make his case to the nation in a prime-time address.
The stakes are high for the president.
After pushing for strikes against Syria, Obama unexpectedly announced August 31 that he would ask Congress to authorize military action. Failing to get Congress to go along would be an embarrassment for the commander in chief.
"He'll go to establishing a new high bar to what it means to being a lame duck this early," said CNN contributor and Republican strategist Ana Navarro. "It would be devastating, I think, for rest of his agenda."
But Stephanie Cutter, another CNN contributor who was Obama's 2012 deputy campaign manager, said Congress' not passing the revolution would be "a blow to the United States. Not a blow to the president, it's a blow to the United States' authority all over the world. And unprecendented."
"That's why you're going to see some members of Congress vote for that particular reason. Some said they're voting for that particular reason," she said.
The Senate could vote on the resolution as early as Wednesday and the outcome there is very much up in the air. Even more up in the air is what might happen in the House, where Republican leaders say they'll wait to see what happens in the Senate before proceeding.
"Congressional approval would help Obama a little, but a majority would still oppose air strikes against military targets in Syria," CNN Polling Director Keating Holland said. "If Congress authorizes military action, 55% of Americans would still oppose air strikes."
The president has had at least a small majority of public support behind him in recent conflicts the U.S. has become involved in over the last 20 years.
Eighty-six percent of those surveyed in a CNN/USA Today/Gallup poll less than a month after the 9/11 terror attacks favored military action and 56% backed the U.S. and its allies creating a no-fly zone over Libya in 2011, the most recent international conflict that the U.S. became involved in.
Only the U.S. involvement in NATO air strikes on Serbia in 1999 during Bill Clinton's administration split the public down the middle with 43% supporting involvement and 40% opposing it.
And while 64% supported using ground troops in Iraq in 2003, intelligence indicating Saddam Hussein was building weapons of mass destruction was later discredited and has contributed to public doubts about the evidence the Obama administration says it has putting the blame for the attack on the Assad regime.
Fifty-nine percent of people questioned say they don't think Congress should pass a resolution that would authorize military action against Syria for a 60- to 90-day period and bar the use of U.S. ground troops, while about four in 10 approve of such a resolution.
If resolution fails
If the Syria resolution gets shot down by Congress, the White House has said that the president still has the authority to strike, but in recent days Obama has sidestepped the question. Asked on Friday by CNN Senior White House Correspondent Brianna Keilar what he would do if the resolution failed on Capitol Hill, the president said, "I think it would be a mistake for me to jump the gun and speculate because right now I'm working to get as much support as possible out of Congress."
But the poll indicates Americans are quite clear on this: More than seven in 10 say they would oppose U.S. air strikes against Syria if Congress does not pass a resolution authorizing such action.
The debate over Syria has caused intra-party divides among both parties: Hawkish Republicans and moderate Democrats say the U.S. should strike while the libertarian wing of the GOP says involvement is not in the U.S.'s interest. Liberal Democrats argue that there are other alternatives to military action that haven't been exhausted.
Dems, Republicans divided
The poll also suggests those surveyed who identified themselves as Democrats and Republicans don't see eye to eye on the resolution. Fifty-six percent of Democrats think Congress should pass it but only 36% of Republicans and 29% of independents say the same.
"Bringing Congress into the equation seems to have added a political dimension to the Syria debate" Holland said. "Once Congress makes up its mind, however, the gap between Democrats and Republicans nearly vanishes."
If Congress does authorize military action, the gap between Democrats and Republicans shrinks to just four points, with 51% of Democrats and 47% of Republicans favoring military action. And if Congress rejects the resolution authorizing military action, large numbers in both parties oppose air strikes.
"It appears that while the debate is still in the hands of Congress, politics will affect Americans' views on Syria," Holland said. "Politics may still stop at the water's edge for most Americans, but Capitol Hill remains a highly partisan environment, even when international affairs are being debated."
Reason for opposition
The poll gives some insight into why many Americans oppose action.
While more than eight in 10 say that it's likely or certain that the Syrian government used chemical weapons, nearly seven in 10 say that it's not in the U.S.' national interest to get involved in Syria's civil war. And more than seven in 10 say that air strikes would not achieve significant goals for the U.S.
And while most of those questioned said that how their members of Congress voted on the resolution wouldn't affect how they voted in future elections, but the remainder by a nearly 3-1 margin said they would be more likely to vote against the lawmakers if they supported the resolution.
The CNN poll was conducted by ORC International September 6-8, with 1,022 adult Americans questioned by telephone. The survey's overall sampling error is plus or minus three percentage points.