Yes, this is a very frightening possibility. Let's call it the Jack D. Ripper strategy. (from Dr. Strangelove) Let us remember that Ripper was not just a crazy nut who launched the planes under his command to attack the USSR, but he explicitly gambled that when the high command found out about his impending attack they would launch an all out assault in an attempt to cause enough destruction before the USSR would be able to retaliate.
So, when Congress becomes aware of the bombing or Iran they "will have to" back a full force escalation in order for the US not to completely loose power in the world...
I wonder if Bush is concerned about the purity of essence of his precious bodily fluids.

Short of...declaring war? This was simply not the case and I don't know where did you get such information. About hands in gloves with American British regimes there is no need to talk about really - even Mr Schroeder and Mr Chirac who demagogically opposed the war on Iraq offered all kind of military and logistical help for US-UK war criminals.