President Bush, not Congress, made the decision to withhold funding for American troops in Iraq.
The Democratic Congress provided the necessary funds for U.S. forces in Iraq and Afghanistan to do their jobs and it was President Bush, trying to make the political statement that he favors an unending American presence in Iraq, who is keeping those funds from the troops. Michael Castle supported this position.
George W. Bush, through his veto, is sending a statement to Iraqis, Americans and the rest of the world that he intends for the United States to remain in Iraq indefinitely — not until some particular goal is achieved but effectively forever.
Michael Castle is okay with that.