:-)
If they want in so bad then they should have to pay a membership fee. Based on the 2003 census there are 129,649,942 people in the blue states. Each person gets charged $1100US each year for three years. Upon currency conversion, assuming our dollar miraculously stays at it's present high level, that means we'd collect $517,692,218,406.00 (129649942*3300*1.21) which will pay off our national debt of $510B.
Oh yes, you'll also be trading in your guns for hockey sticks. Feel free to sell them to the red states. That'll help with the membership fee. Maybe the reddies will keep killing each other and we can slowly take over all of North America...