Forteza was chosen as a candidate for La République En Marche! in May 2017 for the second constituency for French residents overseas. On 17 June she was elected with 60.92% of the vote, defeating Sergio Coronado of Europe Ecology – The Greens. The abstention rate was 87.53%, compared to 84.45% in the 2012 elections.[4]
In parliament, Forteza serves as member of the Committee on Economical Affairs.[5] In addition to her committee assignments, she is part of the parliamentary friendship groups with Argentina and Brazil.[6]
In August 2017, Forteza was given responsibility for all bills aiming to restore trust in political life.[7]
In 2018, she created, with French deputy Matthieu Orphelin, a website allowing citizens to ask questions, some of which later were sent to the French Government.[8][9]
The same year, she was nominated rapporteur of the Personal Data Protection Bill [10] which integrates into French law the General Data Protection Regulation (GDPR). On this occasion, she publicly denounced the "commercialization of personal data".[11]
During 2019 spring, she was in the running for the position of Minister of State for the Digital Economy, finally vested in Cédric O: according to Le Figaro, she would have been "more centred on revitalizing democracy with digital tools, or protecting personal data".[12]
In October 2019, she was nominated co-rapporteur of a parliamentary mission on "digital identity".
In January 2020, she remitted to the Government a parliamentary report of the French strategy for quantum technologies,[13][14][15] containing 37 public recommendations out of 50.[16]
On January 28, 2020, she announced her departure from La République en marche on French national radio: having explained the lack of consideration for left and ecological issues, she expressed deep disagreement with the political methods used by the party, which "rewards friendships more than competencies".[17][18] She became a non-attached member at the French National Assembly and called for the creation of a new "ecologist and progressist" political group.[19] From May until October 2020, she was one of the 17 initial members of the short-lived Ecology Democracy Solidarity group.[20] Since October 2020, she has sat as a Non-Attached Member.
She supports the dissenting candidacy of Cédric Villani for the 2020 municipal elections in Paris, and campaigns in the 19th arrondissement of Paris. She obtained 5,82% of the vote during the first ballot.
