We should take Chavez up on his offer, and when he fails to come through. Go with Blue Rectangle's plan and embarass the hell out of him.
The best response the U.S. could do is to launch a surprise air drop of food and medical supplies over the slums of Caracas. It would show our generosity and also make a not-too-subtle statement about Venezuela's air defenses.
(to both of you)
Given how much money Chavez has raked in with oil sales, their economy should be doing a lot better. Maybe if he wasn't giving lots of it to Cuba...
