[xoxoxoBruce]

I believe it fell out of favor in the late thirties, but by '44 certain American scientists, particularly the ones without seniority/tenure, and all the ones with mistresses or same sex lovers, were convinced to grow them again. They also were convinced to wear European style suits.

It was all part of operation, HideAllTheEvilGermanScientistsFromTheGodlessCommies. We could hide the Germans in plain sight if the didn't stand out... and kept their mouths shut. It must have been a good plan as it took Wiesenthal decades to find some of them.

And it goes without saying, we wouldn't even consider asking the Evil German scientists to do evil for us. Nay, nay, we snatched them wholesale only to keep the godless commies from forcing the Evil German scientists to do evil for the Red Menace.