Dealing with outside attacks from another country are a different kettle of fish. You know that, but want to obfuscate the issue with meaningless comparison of apples and oranges.
Congress has NO authority to regulate trade that occurs within a State.
/johnny
So I take it by this statement that you regard the transshipment of drugs from foreign countries as effectively an attack on the populace of the United States. Good, because that's how I see it as well.
But I think the Government has the authority to deal with attacks that come from inside our borders too. The salient point here is that drugs constitute an "attack" against our populace.
Congress has NO authority to regulate trade that occurs within a State.
It isn't "Trade" when it deals with dangerous and illegal banned substances.