Whichever speechwriter came up with the phrase, "Romnesia," deserves a great position in the President's second term, if all goes well. The President uses the phrase to capture Romney's pandering as well as his untrustworthiness. What's key about the latter characterization is that it implies a not-so-hidden agenda, namely to ultimately serve the Republican objectives of privileged rules for the rich while shifting the most threatening burdens of risk from government onto a struggling American Middle Class populace, not to mention the poor.
Best of all, the President caps his diagnosis with a triumphantly received cure - Obamacare's coverage of pre-existing conditions. Good luck to GOP strategists who thought saddling the Affordable Care Act with that moniker would be a net negative - if Obama wins his second term and the law remains intact, it will be a trademarked Democratic legacy for all time.
If so, I expect that Fox News will eventually revert to calling it the ACA or maybe some new negative term they invent. You will see Republicans in 2024 or 2040 running on how they want to "preserve Obamacare" by turning it into a voucher system, and how dare their Democratic opponent threaten Obamacare by whatever mild reforms they may enact or advocate to keep it running.
Just like Medicare, the signature achievement of President Lyndon Baines Johnson. Democrat.