Former Massachusetts Gov. Mitt Romney and former Pennsylvania Sen. Rick Santorum have been zeroing in on the economy as they campaign to win votes in Tuesday's Illinois primary.
    
Romney took aim at President Obama's economic policies.

"This administration thinks the economy is struggling because the stimulus was too small. The truth is this economy is struggling because the government is too big, too intrusive, to invasive of our economic freedoms," he said.

Santorum said at one point the economy was not a top issue in the campaign -- a comment he later amended.
        
The former senator said the economy and unemployment were important, but they are just symptoms of bigger problems -- the intrusion of government on Americans and the erosion of their freedom.