Romney keeps focus on economy despite Obama attacks

White House candidate Mitt Romney on Friday kept his focus on attacking President Barack Obama's handling of the economy, in the face of Democrats' attempts to paint the Republican hopeful as weak on national security.

Speaking in the Rust Belt swing state of Ohio, Romney accused Obama of wanting to transform America's economy into a more tightly regulated European model. The former business executive promised he would restore the principles of free-market economic freedom.

"Now, the election before us presents an opportunity to either restore and strengthen those opportunities and principles, or choose new ones," Romney said at Otterbein College.

The Obama campaign tried to bring the first anniversary of the killing of Osama bin Laden to the forefront with a video that suggested Romney might not have made the decision to kill bin Laden if the Republican had been president at the time.

"Which path would Mitt Romney have taken?" the video asks, before referring to news reports quoting the former Massachusetts governor saying it was "not worth moving heaven and earth, spending billions of dollars, just trying to catch one person."

Romney kept his message focused on the economy.

"We're about 5 1/2 million jobs short of where we were before the election, and he hasn't turned that around," Romney said. "This is a tough time for the American people."