President Obama and Republican nominee Mitt Romney campaigned in swing states Ohio and Virginia and last week, each one touting accomplishments they say show their support for American businesses.

For the second time in as many weeks, Obama spoke at Ohio events to trumpet a trade case the administration filed against China last month asking the World Trade Organization to sanction China for subsidizing exports of cars and auto parts that encourage U.S. companies to move production to China. Romney has criticized the president’s trade policy toward China, saying the administration’s failure to label the country a “currency manipulator” — which could allow the U.S. government to erect tariffs — is hurting American manufacturing.

Obama repeated criticism that Bain Capital, the private equity firm Romney founded and managed, helped businesses outsource U.S. jobs.

“He made money investing in companies that uprooted from here and went to China,” Obama said. “When other countries don’t play by the rules, we’ve done something about it. We’ve brought more trade cases against China in one term than the previous administration did in two.”

In Ohio, Romney reiterated his intention to repeal the federal health care law — which he has said would hurt small businesses by straddling them with costly new regulations — if elected. He also, however, touted the Massachusetts health care reform law achieved during his tenure as governor of Massachusetts, despite similarities between the Massachusetts law and the federal law.