This week I received an e-mail from a This contributor kindly asking me to remove something incriminating from his contributor’s bio on the website. He pointed me to an article that outlines the plight of Vancouver psychotherapist Andrew Feldmar, who was barred from ever again entering the United States because he discussed his use of LSD in an academic article that was easily found via search engines. There’s no happy ending for Feldmar—applying for a waiver that would allow him entry to the U.S. is a costly, demeaning process, and having the U.S. government’s decision overturned through the courts is near impossible.

So this is just a friendly reminder for those of you who wish to visit the U.S.: Don’t post on the internet anything that might jeopardize your freedom to travel.