It is certainly understandable that nations who feel threatened undertake extraordinary actions. Having porous national borders with Mexico and Canada underlines the problems with the present policies because any number of terrorists and weapons could be in the USA already.
I am critical of the decisions taken with regard to the invasions of Afghanistan and Iraq, but I do not disagree with the need for immediate intervention in Afghanistan. I remain doubtful about our failure to fire-bomb the poppy fields in Afghanistan which had been the source of money that kept Taleban and warlords going. But these things will be better studied and evaluated fifty years hence.
It is no secret. The US retains the right to use nuclear weapons first if we believe it is justified to defend this country. It is our stated policy. We will not wait until we are attacked by nuclear weapons.
I won't address the rest of your scatological comments, which have nothing to do with the subject of preemptive attacks.