Something the US couldn't do under the previous government. Plus many switched to wheat beforehand anyway due to food shortages. The US didn't rule Afghanistan and had to work within Afghanistan's government. That government is gone. The Taliban can act like a dictator. Sure, armed with little more than sticks, but farmers had a two year lag beforehand to switch to wheat. This ban wasn't just announced it's old. It was just never enforced til now. I mean, it's ridiculous to compare the two situations. If the US did the same, at the time they were there, there would have been total economic collapse plus basically commiting war crimes.