Oh, I can understand why seeing the signs would be a shock - they're very blunt. But the message is clear.
And it's a bit rich to assume that your embassy would help you in a situation like that - if you had put yourself in that situation in the first place. Especially with the old "But, but, but... I'm an American!" line as your defense.
I'm not sure what would happen if you just left the drugs at the end of the air bridge, and didn't bring carry them across the immigration line. Does that still count as "trafficking"?
"But officer, I read the sign, and figured I'd follow your rules - so that's why I left the kilo of heroin there in that duty free bag."