the constitution?
No, you’re claiming that Congress gave Bush a Declaration of War. That is incorrect.
If you’re sure it is correct, then please provide proof of the Declaration of War. When was it passed and what is the text of it? A link will be sufficient.
But you won’t find one. Congress gave Bush an Authorization for the Use of Military Force (AUMF), which is not a Declaration of War as required by the Constitution. The last congressional Declaration of War was for WWII in 1941.