The former head of the European border protection agency Frontex, Fabrice Leggeri, is running for Marine Le Pen’s French right-wing populist party in the European elections in June. Leggeri said on Saturday evening that he had joined the National Rally party list. He put migration at the forefront of his candidacy announcement, saying he would fight for tougher EU immigrations rules if elected. Leggeri resigned as Frontex chief in 2022 after serious accusations were made against him and his staff over the treatment of migrants trying to reach the European Union. Under Leggeri, Frontex managers…