From Moonbattery, via Maggie’s Farm, are famous quotations reconstructed in the style of the current President:
"Mr. Gorbachev, that wall is none of our business." — Ronald Reagan
"December seventh, nineteen forty-one. A date upon which we must ask ourselves, what could we have done to avoid this?" — FDR
"Ask not what you can do for your country, ask what your country can do for you!" — JFK
"If America shows weakness and uncertainty, the world will drift toward tragedy. Pretty sure that's gonna happen on my watch." — G. W. Bush
"Speak softly and eloquently." — Teddy Roosevelt
"You can fool all of the people some of the time, and some of the people all of the time, but you really only need to fool the majority of people until the election is over." — Abraham Lincoln
"To be prepared for war is far too provocative." — George Washington
An alternate version, from the comments there:
"December seventh, nineteen forty-one. A date upon which we must ask ourselves, why do they hate us?" — FDR