Since 2019, Mussolini has served as a member of the Chamber of Deputies, holding the parliamentary seat reserved for people with disabilities.
Mussolini, who is physically impaired, previously worked at the National Council of People with Disability.
[5] In 2022, Mussolini was one of five MPs to introduce legislation to give Rwandans access to contraceptive services from the age of fifteen.
The proposed bill, which was introduced with support from Gamariel Mbonimana, Speciose Ayinkamiye, Phoebe Kanyange, and Alice Muzana, was ultimately tabled.
[6] In 2023, Mussolini described the Democratic Forces for the Liberation of Rwanda (FDLR) as a "terrorist group of genocidaires extending their genocide ideology in the DRC".