At a campaign rally at Bowling Green State University, the president said his administration has "brought more trade cases against China in one term than the previous administration did in two -- and, by the way, we've been winning those cases."
"We've stood up for autoworkers against unfair trade practices," he said. "When Governor Romney said stopping an unfair surge in Chinese tires would be bad for America, bad for our workers -- we politely declined his advice. We went after China on that, and we got over 1,000 American workers back to work producing American tires."
Referring to Romney ads promising voters a tough stance on China, Obama said "it feels a lot like that fox saying, 'You know, we need more secure chicken coops.' I mean, it's just not credible.
"He's been talking tough on China," the president said. "And I've got to admit, that message is the better -- is better than what he's actually done about this thing. It sounds better than talking about all the years he spent profiting from companies that sent our jobs to China."
The president also took credit for the auto industry bailout in a state where auto assembly and auto parts account for a large percentage of hiring.
Obama's appearance came on the same day that Romney wrapped up a two-day bus tour of the battleground state, and as multiple polls showed Obama opening a lead over Romney in the state and nationwide.
The Gallup Daily seven-day poll Wednesday showed Obama with a 50-44 lead.