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GOP lawmakers have said they are open to some of the president’s proposals, such as cutting the payroll tax for employees and employers and granting tax credits to employers who hire the unemployed. But Senate Minority Leader Mitch McConnell, Kentucky Republican, said the president’s plan rests on proposed tax hikes that lawmakers in both parties have rejected in recent years.

“If the President is truly interested in growing the economy and putting Americans back to work, then he’ll leave the temporary proposals and the half-measures — and the tax hikes — aside,” Mr. McConnell said. “He’ll consult with both parties and work with us on a plan that indicates he’s learned something from the failures of the past two years, and which actually has a chance of attracting bipartisan support. He could start with a permanent reform of our broken tax system, reducing out-of-control federal regulations, and by passing the trade bills that have been sitting on his desk since inauguration day 2009.

“All of this is doable, all of it should attract bipartisan support, and all of it would create jobs,” Mr. McConnell said. That would be a jobs plan worthy of the seriousness of the moment. But make no mistake: what the president’s proposed so far is not serious.”

Spending elements in the jobs bill also include more money for extended unemployment benefits and $5 billion for a youth summer jobs program next year. There are also tax credits to encourage businesses to hire veterans and the long-term unemployed.

The president and his advisers have said they will campaign against congressional Republicans next year if lawmakers don’t approve the jobs bill. Mr. Cantor sounded on Tuesday as if he and other GOP leaders are willing to take that chance.

“Maybe the issue of taxation, maybe some of these other issues will have to be left for the next election,” Mr. Cantor said. “Because I believe what we’re headed for over the next 14 months is a season in which there will be a robust debate culminating in November 2012 about the very question of who we want to be as a country.”