Phony licenses are pretty rare in the U.S. these days after the increased vetting that occurs due to TSA and FAA requirements.
I have an acquaintance in the expat world who pencil whipped a P1 type rating and a phony letter from a middle east airline to get hired as an A-300 captain at Korean a decade ago. He was a KE 744 captain last time I checked.
I had a friend call me about an Ozmate with a questionable FAA license, I put him in touch with the folks in Oklahoma City, the license was indeed fraudulent. This guy was looking for contract work in Africa.