Biden in 2007: Impeach a president who goes to war without Congressional approval

Biden and Obama both thought war without Congressional authorization would be unconstitutional, but they did it anyway. Say what you will about Bush, but he got Congressional approval for both of his wars.

Newsbusters: Networks Stressed Importance of Congressional Approval Before Iraq War; Now Barely Notice Obama’s Bypassing of Congress

Ace of Spades: Yes, Obama Must Seek Congressional Authorization For The War In Libya

Verum Serum: Obama vs. Obama on War Justification

Fox: Fact: Bush Had 2 Times More Coalition Partners in Iraq Than Obama Has in Libya