I took a pharmicutical prescribed by a doctor many decades ago for stomach problems. Hyper acid flow.
I imagine khat has been in the U.S. for years but it just went unrecognized because customs, the DEA and the police didn’t know what it was. I knew a Lebanese-American who told me when he was a child in the 1950’s, living in New England, his grandfather would smoke hashish in a water pipe a few times a week the way other grandfathers smoked tobacco. I asked him where his grandfather got the drug and he said relatives in Lebanon would mail it to the house. He said nobody paid any attention to it in those days or gave any thought to it being illegal.