On 21 June 2017, Loiseau succeeded
Marielle de Sarnez as the French Minister for European Affairs. Loiseau has been a
Member of the European Parliament since the
2019 European elections. She has since been a member of the
Committee on Foreign Affairs and its
Subcommittee on Security and Defence, the latter of which she chaired from 2019 to 2024. In 2020, she also joined the Special Committee on Foreign Interference in all Democratic Processes in the European Union. In addition to her committee assignments, Loiseau is part of the Parliament's delegations for relations with the
Maghreb countries and the
Arab Maghreb Union; to the Parliamentary Assembly of the
Union for the Mediterranean; and for relations with the
NATO Parliamentary Assembly. She is also a member of the European Parliament Intergroup on Children’s Rights the
European Parliament Intergroup on LGBT Rights and the
MEPs Against Cancer group. Since 2021, she has been chairing the Parliament's delegation to the EU-UK Parliamentary Assembly, which provides parliamentary oversight over the implementation of the
EU–UK Trade and Cooperation Agreement. Loiseau was re-elected as an MEP following the
2024 European Parliament election. She was selected by the European Union as the chief of mission of its observation team to monitor the
February 2025 Kosovan parliamentary election. ==Political positions==