Present policy under MAD-

If a nation launches even one missile at the US or allies, the US will respond with overwhelming force and destroy that nation.


Policy available with BMD-

If a nation launches only a few missiles at the US or our allies, we can destroy them, determine the intent of the launchings, and take the action appropriate.


SO, CarolC, you want to keep the present MAD in effect, and be responsible for the killing of millions of civilians ( on either or both sides) when and accidental launch, or terrorist occupation of a launch site?

Just keep insisting on no BMD.