"It involves some insight into the perspective of our diplomatic partners around the globe," he said. "It involves reading out conversations that the president and others have had with our allies. It involves a review of the options that are available to the president as he considers an appropriate response."
Along with the congressional briefings, the administration is expected to publicly release a declassified intelligence report this week on what happened in Syria. The White House has made clear that the report would come out before any U.S. action occurs.
Boehner seeks "clear, unambigous explanation"
At home, polls show Americans are conflicted over the U.S. intention to respond in Syria. While national polling over the past few months suggests most Americans don't favor military involvement in Syria, some surveys indicate the public feels Washington would be justified in using military action against Damascus in the event of chemical weapons attacks by the regime.
For almost two years, Obama has avoided direct military involvement in Syria's civil war, only escalating aid to rebel fighters in June after suspected smaller-scale chemical weapons attacks by Syrian government forces.
However, last week's attack obliterated the "red line" Obama set just over a year ago against the use of Syria's chemical weapons stocks.
The United States has concluded Syria carried out chemical weapons attacks against its people, Obama said Wednesday.
"If, in fact, we can take limited, tailored approaches, not getting drawn into a long conflict, not a repetition of, you know, Iraq, which I know a lot of people are worried about - but if we are saying in a clear and decisive but very limited way, we send a shot across the bow saying, stop doing this, that can have a positive impact on our national security over the long term," the president told "PBS Newshour."
Calls for a role in the decision-making process appear motivated both by the incessant grappling to shift Washington's power balance and the general public distaste for more war after more than a decade of conflict in Afghanistan and Iraq.
In a letter to Obama on Wednesday, House Speaker John Boehner called on the president to "provide a clear, unambiguous explanation of how military action -- which is a means, not a policy -- will secure U.S. objectives and how it fits into your overall policy" regarding Syria.
"I respectfully request that you, as our country's commander-in-chief, personally make the case to the American people and Congress for how potential military action will secure American national security interests, preserve America's credibility, deter the future use of chemical weapons, and, critically, be a part of our broader policy and strategy," Boehner's letter said.
"In addition, it is essential you address on what basis any use of force would be legally justified and how the justification comports with the exclusive authority" of Congress to declare war under the Constitution, the Ohio Republican wrote.
On Thursday, Obama spoke by phone with Boehner to brief him on Syria, according to the speaker's spokesman, Brendan Buck. Boehner was also on the conference call Thursday night.
"It is clear that further dialogue and consultation with Congress, as well as communication with the American public, will be needed," Buck said of Obama.