Linking national security to this role and levying completely disproportionate fines as in the BNP case is clearly an abuse of the special powers the U.S has.
And the BNP fine is kinda light for funding genocide, if you ask me.
Not to mention that the government handing out these fines is responsible for far more devastation than any bank.
And about genocide: I think we both know that the set of countries against which the U.S has imposed sanctions is not equivalent to the set of countries that have committed genocide. It's a list of political enemies of the U.S.
Not all countries on the list have comitted genocide and there are quite a few U.S allies and trading partners that have committed genocide or other brutal human rights violations. They are not on the list because it's politically convenient or very lucrative.