It's behind the paywall, so you may not be able to read it, but Adam Cohen's opinion piece about how Bush's view of the president's role in war is out of line with the founders is good reading.
The founders would have been astonished by President Bush’s assertion that Congress should simply write him blank checks for war. They gave Congress the power of the purse so it would have leverage to force the president to execute their laws properly. Madison described Congress’s control over spending as “the most complete and effectual weapon with which any constitution can arm the immediate representatives of the people, for obtaining a redress of every grievance, and for carrying into effect every just and salutary measure.”
...
Members of Congress should not be intimidated into thinking that they are overstepping their constitutional bounds. If the founders were looking on now, it is not Harry Reid and Nancy Pelosi who would strike them as out of line, but George W. Bush, who would seem less like a president than a king.
