 Legal writer and law professor Eugene Volokh expressed the opinion that while his exclusion from the United States on hate speech grounds was not a violation of the First Amendment, it may be an incorrect application of current immigration law.When Zündel started Samisdat Publishers in the 1970s, he became interested in ufology when the subject was at its peak of worldwide attention.His main offerings were his own books claiming that flying saucers were secret weapons developed by the Third Reich and now based in Antarctica.