Mitt Romney attempted on Thursday to boil down his Medicare plan to a simple explanation: “No change” and “Solvent.”

Those were the words he scrawled on a whiteboard at a last-minute news conference in Greer, S.C. this afternoon as he attempted to address questions about whether his plan is identical to that of Paul Ryan’s. Romney chose Ryan as his running mate last weekend, and the Wisconsin lawmaker is best known for a budget-slashing effort that would convert Medicare into a voucher program for some future seniors.

“I know there’s an effort by some people to try and bring as much confusion to the topic of Medicare as possible,” Romney said. “But I want to bring as much clarity as possible, so I’ve prepared a small chart here, which will describe differences in our respective plans for Medicare.”

But after the 10-minute and 11-second news conference, Romney shed no new light on how he would overhaul the 47-year-old federal health care program for senior citizens and how (or if) his program differs from that of his running mate’s much-maligned proposal that is part of an effort to slash the federal budget deficit.

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