campaign memo sought to distance the presidential candidate's plan from Ryan’s budget proposal, insisting that "as president he will be putting together his own plan."

But on Monday, Romney refused to say where his plan differed from Ryan's vision of turning Medicare into a voucher system.

"My plan for Medicare is very similar to his plan for Medicare," the former Massachusetts governor told reporters in Miami. "My plan, like his, really expands Medicare Advantage. It says, let's give people more opportunity to take advantage of not just the standard Medicare, but also the [private insurance] policies that are available in the market place."

(h/t: Mediaite)