The new U.S. Nuclear Posture defined in 2001 and reaffirmed in 2005 and in 2006 envisions the U.S. use of nuclear weapons against underground facilities of non-nuclear countries. Such nuclear earth penetrating weapons (B61-11) are in the US stockpile since September 2001. The escalating rift with Iran over its nuclear program is likely to lead to the U.S. using low yield earth penetrating nuclear weapons against Iran.
If America uses nuclear weapons against a non-nuclear country it will have catastrophic consequences for America and the world.
Please consider asking your representative in Congress ,  to enact emergency legislation requiring congressional approval for the use of nuclear weapons against non-nuclear countries. This is a power granted to Congress under Article I, Section 8, Clause 14 of the US constitution.