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If it passes intact, Mr. Basu said the plan could be more effective than the February 2009 economic stimulus package. The problem, he said, is getting Congress to reach an agreement.

This year’s Congress has seen a series of struggles. It took six months of gridlock earlier this year for the two chambers to strike a bargain with Mr. Obama to reduce the nation’s $14.3 trillion debt. And most recently, House Speaker John Boehner forced the president to reschedule his jobs speech from Wednesday to Thursday because it conflicted with a Republican debate.

Congress has shown an ability to really mess things up, and I think the most likely scenario is that Congress will continue to mess things up,” Mr. Basu said. “And in the context of the proposed stimulus package, that means even parts of the plan that are broadly attractive will not be implemented — I think that’s a big likelihood.”

Mr. Obama pushed Congress to pass the bill straightaway, and Democrats like Rep. Donna Edwards, a Democrat, agreed that the situation is urgent.

“The American people can’t wait 14 months,” Ms. Edwards said. “We need to rebuild jobs now, and I think there should be a bipartisan commitment to that.”

But Mr. Harris said he does not think it will fly through the House.

“I think the American people expect much more from this Congress,” he said.

Because the bill was crafted using input from both parties, several Maryland representatives said Republicans have no excuse for opposing it.

“He laid out a political set of next steps, and it’s incumbent on Congress to execute that and execute it quickly,” Mr. Sarbanes said. “The Democrats will be eager to do it, and hopefully we can get the GOP to participate as well.”