You can thank our good old congress for their mealy mouthed, do nothing, can't bomb here where the targets are, political bullsh!T!! With our firepower and our tactics after learning the VC and Chicom way, we could have laid waste to the North Vietnamese so bad they would have agreed to sit down at a card table instead of bichin about the shape of it.
I can thank congress for abdicating their responsibilities in allowing a President to pour troops into an undeclared war.
Same as abdicating responsibility in creating laws (i.e. - "agencies" that create rules with the force of law)
Same as abdicating the control of United States currency - turning it over to the Federal Reserve.