The political staffer accused of writing Fraser Anning’s infamous "final solution" speech and holding an obsession with Nazi Germany is employed by the federal government agency managing Australia’s immigration program, it has emerged.

The staffer, Richard Howard, is on unpaid leave from the Department of Home Affairs and has left the door open to returning should Senator Anning fail to be re-elected in May.

However Home Affairs secretary Michael Pezzullo on Friday said if any staff member was found to hold extremist views his department would not hesitate in "turfing them out".

Richard Howard is employed by Senator Fraser Anning and may return to his position at the Department of Home Affairs. Credit:AAP

Senator Anning prompted global condemnation for links he made between the Christchurch terrorist attack and Muslim immigration. At the time of writing almost 1.4 million people had signed a petition calling for him to be expelled from Parliament, and Labor and the Coalition plan to vote together to censure him in a Senate motion when MPs return to Canberra in April.