The simple answer is that conservatives are employing a double standard. ... Read the quotes from most conservative Republicans, and you won't find much information on substantive differences between the plans. Instead, you'll hear partisan politics.
----
Furthermore, McConnell said that Republican lawmakers were aware of Casey's plan before voting against the Levin-Reed proposal. In other words, even though Republicans knew a similar plan was being hatched by Gen. Casey, they nonetheless took the partisan and immature route -- subs uting name-calling for reasonable debate.
This also apparently confirms speculation from a few days ago as correct -- that Vice President Cheney also knew about Casey's gameplan when he told CNN's John King that the Democrats' plans for troop redeployment were "the worst possible thing we could do."