President Obama and Republican challenger Mitt Romney each spent Wednesday campaigning in the battleground state of Ohio, a key prize in the battle to win the November election. Both candidates appealed to voters by attacking the other’s record on China, with Romney saying he will stop the country from taking U.S. jobs.

Mitt Romney: “One of the nations that has cheated over the years has been China. They have artificially held down the value of their currency. And by doing that, the prices of their products are artificially low. And when their prices are low and then they compete with our manufacturers, our guys go out of business and people lose jobs. And that’s why one thing I will do from day one is label China a currency manipulator. They must not steal jobs in an unfair way.”

Romney’s comments come days after his tax returns showed his trust has invested in a Chinese oil company doing business with Iran. President Obama criticized Romney’s comments on China.

President Obama: “He’s been talking tough on China. He says he’s going to take the fight to them, he’s going to go after these cheaters. 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.”