EVANSVILLE, Ind. — Mitt Romney is calling for “something dramatic” to help the economy recover, but he’s not saying exactly what.

The Republican presidential hopeful said he opposes another federal stimulus package and new government programs. He also said that if the Federal Reserve were to undertake another “massive” program of buying government bonds and mortgage-backed securities, with the goal of driving long-term interest rates even lower, it wouldn’t help the recovery.

“I can absolutely make the case that now is the time for something dramatic and it is not the time to grow government. It’s the time to create the incentives and the opportunities for entrepreneurs and businesses big and small to hire more people and that’s going to happen,” Romney said Sunday on CNN’s “State of the Union.” “You’re going to see that happen in this country but not under this president.”

Democrats tried to cloud Romney’s message Sunday by renewing calls for the former businessman to release years of personal tax returns. Romney insisted as recently as Friday that he won’t release more than two years of returns, although most presidential candidates, including his father, released many more. “What is it that he is hiding?” Obama senior adviser David Axelrod said on “Fox News Sunday.” He also addressed Senate Democratic leader Harry Reid’s recent decision to share an anonymous claim that Romney hasn’t paid taxes for 10 years.

Republican Party chairman Reince Priebus, on ABC’s “This Week,” branded Reid a “dirty liar.” Romney in recent days called on Reid to “put up or shut up.”

Axelrod said Romney and his campaign “can resolve this in 10 seconds. They can release the tax returns.”

Meanwhile, the Republican candidate is trying to promote an economic agenda he said repeatedly this past week would create 12 million jobs in his first term. Pushed to explain how, Romney said in the CNN interview, “That’s what happens in a normal process.”

“When you come out the kind of recession we’ve had, you should see this kind of job creation,” he said. “Good things happen when you have a private sector that’s thriving.”