A Royal Decree on 16 May 2001 nominated Moerman as a judge at the Belgian constitutional court.In 2017 Moerman was proven to have ties with Azerbaijani caviar diplomacy and lobbying for the regime of Azerbaijan.
He himself conceded "having fallen in love a bit."
Moerman frequently traveled to Azerbaijan and his trips were covered by the Communication Office of Azerbaijan (OCAZ), an organization founded by Alain Destexhe and Stef Goris who are known for promoting Azerbaijani interests in Europe.
Moerman is known for his statements in favor of governing regime of Azerbaijan and criticizing the reports of prominent human rights organizations such as Amnesty International.Moerman was mentioned as a member of the so-called "Habsburg group", potential lobbyists for Ukraine, in a 21-page filing by U.S.
Special Counsel Robert Mueller that was unsealed on 13 June 2018.