Did Congress ever officially declare the war in Irag and Afganistan"?

If there was no declaration of wars, how did we get involved into the war in Afganistan and Irag?
Update: Has the Joint Resolution 23 given too much war power to President Bush?
Update 2: If Congress authorize the use of force in Afganistan and Irag according to the Joint Resolution 23, does that mean that that was the official declaration of war? Or ...?
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