World War

"We have to level with the American people," said Sen. George V. Voinovich, Ohio Republican. "This is another world war."
From this article in the Washington Times covering Condoleezza Rice's appearance before the Senate Foreign Relations Committee this week:
http://washingtontimes.com/world/20051019-095906-4805r.htm
It would appear, according to the write-up, that the US has embarked on an effort to reshape the entire Middle East.
"Unless we commit to changing the nature of the Middle East, and if we tire and decide that we are going to withdraw and leave the people of the Middle East to despair, I can assure you that the people of the United States are going to live in insecurity and fear for many, many decades to come," Miss Rice said.
"We had to make a decision that we were going to go after the root cause of what caused September 11," she said. "So what I'm describing to you, Senator, is not what you voted for in the war resolution, but the broader strategy of the administration."
To me, this would seem like an impeachable offense, to appropriate the American military into a World War without the consent of Congress. Why does it not seem that way to conservatives?