ALL WE NEED NOW IS THE KILLER RABBIT:

The meeting in the Oval Office in late June was called to give President Obama and the four top members of Congress a chance to discuss the unraveling situation in Iraq.

But Harry Reid, the Senate majority leader, wanted to press another point.

With Mitch McConnell, the Republican leader, sitting a few feet away, Mr. Reid complained that Senate Republicans were spitefully blocking the confirmation of dozens of Mr. Obama's nominees to serve as ambassadors. He expected that the president would back him up and urge Mr. McConnell to relent.

Mr. Obama quickly dismissed the matter.

"You and Mitch work it out," Mr. Obama said coolly, cutting off any discussion.

Mr. Reid seethed quietly for the rest of the meeting, according to four separate accounts provided by people who spoke with him about it. After his return to the Capitol that afternoon, Mr. Reid told other senators and his staff members that he was astonished by how disengaged the president seemed. After all, these were Mr. Obama's own ambassadors who were being blocked by Mr. McConnell, and Secretary of State John Kerry had been arguing for months that getting them installed was an urgent necessity for the administration.

But the impression the president left with Mr. Reid was clear: Capitol Hill is not my problem.

To Democrats in Congress who have worked with Mr. Obama, the indifference conveyed to Mr. Reid, one of the president's most indispensable supporters, was frustratingly familiar. In one sense, Mr. Obama's response was a reminder of what made him such an appealing figure in the first place: his almost innate aversion to the partisan squabbles that have left Americans so jaded and disgruntled with their political system. But nearly six years into his term, with his popularity at the lowest of his presidency, Mr. Obama appears remarkably distant from his own party on Capitol Hill, with his long neglect of would-be allies catching up to him.

In interviews, nearly two dozen Democratic lawmakers and senior congressional aides suggested that Mr. Obama's approach has left him with few loyalists to effectively manage the issues erupting abroad and at home and could imperil his efforts to leave a legacy in his final stretch in office.

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