Who is really stupid enough to believe this?
Three letter agencies are above the law. They don't care what people tell them to do.
I grew up in apartheid South Africa. We had all sorts of sanctions from various countries (USA, UK, Canada,...). Later it comes out the CIA and South African government were arm-in-arm in the war in Angola. The CIA was supplying arms and arms design information to South Africa and South Africa was supplying info gathered from captured USSR weapons back to USA.
To think that anything has materially changed since then would be grossly naive.