Thus, for example, Obama's description of Republican criticism of his plan to nationalize health care was that "this thing was some Bolshevik plot."

No. No one said it was a "plot," Bolshevik or otherwise.

Republicans' objection to national health care could be more accurately portrayed as follows: Obama's plan to nationalize health care was a terrible idea because it would turn over one-sixth of the American economy to Washington bureaucrats, who would run the system as competently as the federal government runs everything else, from airport security to the post office to FEMA.

How about responding to that argument? (And as long as Obama brought it up, can he explain which part of national health care the Bolsheviks would have objected to most strongly?)

This isn't how adults conduct serious political debates; it's how children argue with their parents. Don't have a cow! Liberals hide conservative arguments from the public like teenagers hide contraband from mother under the bed.