Applause and cheers audible at 20-minute closed-door session with the former candidate and House colleagues.

Rep. Hastings: “She offered scintillating remarks on our need for unity.”

Speaker Pelosi: “Sen. Clinton has emerged from this election as the most respected political figure in America for now, and for a long a time.”

Plus: Clinton tells reporters after event: “This is a make-or-break election, and I am 100 percent committed to make sure I do all I can to make sure Sen. Obama is sworn in as the next president of the United States.”

More: Roll Call reports Obama will install his congressional outreach team and establish plan for the general by the time Congress returns from recess July 7.