Irregularity is treated as administrative illegality, but "the line between "regular" and "irregular" is not obvious, and at any moment one may fail to be regular," as Nathalie Ferré has stated 1997, pp. 36-37.
La irregularidad administrativa es tratada como ilegalidad, pero, "la frontera entre ΄regulares΄ e ΄irregulares΄ no es evidente, en cualquier momento se puede dejar de ser regular", como lo señala Nathalie Ferré 1997, pp. 36-37.