Obama Climbs Back On the Campaign Bus in Ohio, Pa.

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Earlier this week, Obama's campaign released a new TV ad, airing in Ohio, Pennsylvania and other states, that says: "Mitt Romney's companies were pioneers in outsourcing U.S. jobs to low-wage countries. He supports tax breaks for companies that ship jobs overseas. President Obama believes in insourcing." The ad also highlights Obama's decision to rescue U.S. automakers General Motors and Chrysler. Both companies have a large manufacturing footprint in Ohio.

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Former Gov. Ted Strickland, D-Ohio, previewed the president's expected critique in a conference call organized by Obama's campaign, saying: "Romney literally made a fortune investing in companies that were pioneers in sending jobs to countries like China and India. Romney didn't bet on the American worker, he bet against them."

Romney's team counters that Obama has presided over a series of broken promises on unemployment, the economy and the federal deficit.

"No one should bet against America. But we certainly shouldn't double-down on Barack Obama," said former Minnesota Gov. Tim Pawlenty, a top Romney surrogate. "We tried that and it ended up in a busted hand."

The bus tour will coincide with Friday's release of the June jobs report. The May report showed unemployment had ticked up to 8.2 percent while the economy created 69,000 jobs, raising concerns among Obama's team about the potential for the economy to slow down. Earlier this week, economists reported that U.S. manufacturing shrank in June for the first time in nearly three years, adding to the questions about the economy.

Another bad report could undermine Obama's argument that the economy has shown signs of improvement and can rebound more fully if Republicans in Congress implement some of his ideas on job creation. An Associated Press-GfK poll released last month found that more than half of those surveyed, 52 percent, disapproved of his handling of unemployment, compared with 45 percent who approved.

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