Intel used to come up regularly in discussions as requiring drug tests of all engineer new hires - and people either not bothering to apply based on that or trying to never show up for the test. Good to hear hints that this changed.
fwiw: That was in Oregon where pot was legal. I wouldn't be surprised if it's somewhat more strict in say, Arizona. Also, I knew that fab folks, both blue and green badge (people wearing bunny suits) were drug tested.