If the repubs wanted to really have decisive control, then they wouldn't have alienated the conservatives.
Bush' tax cut proposal is a joke, it is insignificant in size. Worse than that is that the Republicans now stand for big government. They are and have been for the last 5 years making government grow at substantially faster rates than the democrats did when they controlled the budget in the previous five years.
All evidence is that the Republicans are today the party of big spending. They're also the party of class warfare in that they come up with special subsidies specifically for upper income people, the Republicans pass special laws for special labor markets for the purpose of lowering wages in those markets, labor markets that blue collar people thrive in, meanwhile the Republicans don't apply the same standards to their own.
Look at any suburban city in America that has a predominantly Republican city council and you will find that they've made laws outlawing the construction of homes in their borders for lower income people.
The Republicans are now spending money so rapidly in Washington that even the Republicans are projecting that they will have to lower social security benefits in future years because of the excessive spending today.
President Bush got a bigger tax cut through than anyone thought imageable. We have a President (a good one) not a dicator