)[1] In the late 1970s, his planned march in the predominantly Jewish suburb of Skokie, Illinois was challenged; however, the American Civil Liberties Union defended Collin's group's freedom of speech and assembly in a case that reached the United States Supreme Court to correct procedural deficiencies.

Specifically, the necessity of immediate appellate review of orders restraining the exercise of First Amendment rights was strongly emphasized in National Socialist Party v. Village of Skokie, 432 U.S. 43 (1977).

Afterward, the Illinois Supreme Court held that the party had a right to march and to display swastikas, despite local opposition, based on the First Amendment to the United States Constitution.

[4][5] After being released early on parole from prison, Collin created a new career as a writer, publishing numerous books under the pen name Frank Joseph.

[8] As a young man, Collin in the 1960s joined George Lincoln Rockwell's National Socialist White People's Party.

[4] Covington helped buy a building for the group which they called Rockwell Hall,[4] where Collin and some other members lived in a barracks in upper floor.

[12] The Chicago authorities became concerned about violence and passed an ordinance which required demonstrations to post large insurance bonds.

[4][12] Also in 1977, Koehl's NSWPP began a campaign in their paper White Power about Collin's father being Jewish,[4] including publications of what they stated were Max Simon Cohn's naturalization records.

The magazine's claims are similar to discredited nineteenth century theories, and as a result, they are considered dubious or exploitative by scholars.