Granted, it is a few dozen bungled policies ago, but remember when we were blowing up fishing boats in the Caribbean as part of the administration’s Operation Dude Bro antidrug strategy? Well, the results are in, and they are sadly predictable. From The Washington Post:
In a recent assessment reviewed by The Washington Post, DEA analysts found the strikes had failed to affect the supply or price of cocaine in the United States and had led traffickers to diversify beyond go-fast boats and to avoid international waters, opting instead for larger boats and hemming close to coastlines, where U.S. forces are less likely to open fire. In a closed-door briefing last month, Pentagon officials told lawmakers the strikes in international waters off South and Central America had not reduced its purity.
The way I read it is that the drug trade has an expected demand. If the supply channels were interrupted, they might cut what did make it into the country, in order to keep a consistent volume.
Law enforcement may assume a certain purity coming in, but can only track the change in what actually makes it to the street.