[1][2] Claus Christian Claussen was born in Bad Segeberg in Schleswig-Holstein.

[1] Claussen became a member of the Young Union in 1975 and a member of the Christian Democratic Union (CDU) in 1993, upon which he became deputy district chairman in Flensburg.

[2] In 2000, he became a board member of the Schleswig-Holstein Christian Democratic Union (CDU), a position he held until 2016.

[2] He was appointed Schleswig-Holstein Minister of Justice, European Affairs and Consumer Protection by Minister-President Daniel Günther on May 4, 2020, succeeding Sabine Sütterlin-Waack.

[4] He was succeeded by Kerstin von der Decken on 29 June 2022.