Pelosi says House is only voting on narrow provision to arm and train Syrian rebel groups.
Lawmakers divided over whether voters should declare independence.
The funding will help underwrite efforts to contain the outbreak in West Africa.
House lawmakers predict their chamber will vote Wednesday to give Obama authority.
"It's getting worse," said Obama. "It's spreading faster and exponentially.
“I’m not doing any hypotheticals if we lose because I don’t think we are,” he told reporters.
Durbin said he'd like to suggest a number of changes to the amendment.
Rep. Hank Johnson said there's "apprehension" and "angst" about moving forward.
Some Republicans aren't sure a majority of their conference will back vote.
As many as 3,000 military personnel could be dispatched to West Africa to aid the effort.
Probe extended but no details released.
Thirteen bids were narrowed to four sites in Chicago, Hawaii and New York City.
The White House is “gratified” by early signs of support for the president’s request.
Even relative hardliners say they will keep the big picture in mind.
Experts say de Blasio has made fighting terrorism in NYC a lower priority.
Boehner tells new Iraqi leader that Congress will stand with him "shoulder-to-shoulder."
The president and researchers there will "discuss the U.S. response to that outbreak."
Republicans are putting together an agenda in case they win control of the Senate.
Chairman Darrell Issa is under pressure from Democrats to probe the Ray Rice incident.