But in Washington, where anything beyond last week's news cycle is considered ancient history, the jury-rigged nature of the Bush plan—and the fiscal sleight-of-hand involved—have been all but forgotten.

"We knew that, politically, once you get it into law, it becomes almost impossible to remove it," says Dan Bartlett, Bush's former communications director. "That's not a bad legacy. The fact that we were able to lay the trap does feel pretty good, to tell you the truth."