President Barack Obama's jobs bill is expected to fail in a Senate vote Tuesday, since Republicans oppose its spending components and tax surcharge on millionaires.
The White House rewrote parts of the $447 billion plan in order to get enough Democrats on board to pass the legislation.
Obama has been waging a campaign-style cross country effort in order to get Congress to pass the bill. He traveled to Pittsburgh Tuesday, making a plea for support in a state crucial to his re-election hopes.
The president planned to join his jobs council of corporate and labor leaders in Pittsburgh as they unveiled a report calling for sweeping and urgent changes in government policies.
But while Obama's Council on Jobs and Competitiveness laid out a series of policy overhauls that were sure to please and irritate Democratic and Republican partisans alike, his jobs bill appeared to be stalled on the Senate floor.
"This is not the time for the usual games or political gridlock in Washington," the president said in his weekend radio and Internet address.
"Any senator out there who's thinking about voting against this jobs bill needs to explain why they would oppose something that we know would improve our economic situation," Obama added.
The measure combines payroll tax cuts for workers and businesses with $175 billion in spending on roads, school repairs and other infrastructure. It also includes unemployment assistance and help to local governments to avoid layoffs of teachers, firefighters and police officers.
One economist predicts the measure would add 1.9 million payroll jobs and reduce unemployment by two percentage points.
However, Republicans say the measure is not a jobs bill, but looks more like the 2009 stimulus bill.
"It's not a jobs bill. In our view, it's another stimulus bill," Senate Minority Leader Mitch McConnell, R-Ky., told Fox News. "I don't think it'll pass and I don't think it should."
House GOP leaders say they won't bring the measure to the floor.