Like the whole initial excuse for the tariffs on imports from Canada "because of fentanyl" despite <1% of fentanyl coming into the US arriving via the Canadian border https://www.npr.org/2025/02/02/nx-s1-5283957/fentanyl-trump-...

If you don't measure you can just assume all valies are 0.

But assuming it's a large number is not possible, of course.

I assume it's a large number because the fentanyl superlative the Canadian police raided had literal tons of precursors.

so you understand how much "tons" is with regards to a population of 330m Americans? Now consider that China probably has gigatons and is where all of NA gets most of its supply.