Andrew Feldmar, a Vancouver psychotherapist, was on his way to pick up a friend at the Seattle airport last summer when he ran into a little trouble at the border.
A guard typed Mr. Feldmar’s name into an Internet search engine, which revealed that he had written about using LSD in the 1960s in an interdisciplinary journal. Mr. Feldmar was turned back and is no longer welcome in the United States, where he has been active professionally and where both of his children live.
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