An expulsion decision may only be taken if it constitutes an overriding necessity for State security or public safety and provided that article L. 631-3 does not prevent it:
>Foreign nationals who are
1° A foreign national who is the father or mother of a minor French child residing in France, provided they can prove that they have effectively contributed to the upkeep and education of the child under the conditions set out in article 371-2 of the French Civil Code since the child’s birth or for at least one year;
2° A foreign national who has been married for at least three years to a spouse of French nationality, provided that the community of life has not ceased since the marriage and that the spouse has retained French nationality;
3° Foreign nationals who have been legally resident in France for more than ten years, unless they have held a temporary or multi-annual residence permit bearing the word “student” throughout this period;
>Foreign nationals who have been legally resident in France for more than ten years, unless they have held a temporary or multi-annual residence permit bearing the word “student” throughout this period
4° A foreign national in receipt of a pension from a French organisation for an accident at work or an occupational disease and whose permanent disability rate is equal to or greater than 20%.
By way of derogation from this article, the foreign national mentioned in 1° to 4° may be the subject of an expulsion decision pursuant to article L. 631-1 if he/she has been definitively sentenced to a fixed term of imprisonment of at least five years.
By way of derogation from this article, the foreign national mentioned in 1° to 4° may be the subject of an expulsion decision if he/she is living in France in a state of polygamy.