RUTH MARCUS: “Listening to Democratic reaction to Bush’s new health insurance proposal, you get the sense that if Bush picked a plank right out of the Democratic platform — if he introduced Hillarycare itself — and stuck it in his State of the Union address, Democrats would churn out press releases denouncing it.” And if he announced a troop surge that Harry Reid was urging just last month, they’d denounce that. Oh, wait . . . .