Is the marriage valid if I marry a girl who was born out of wedlock, and her guardian is a center director and not a mosque imam, knowing that the guardian is not from the girl's original country? And must the guardian be the director of an institution approved by the democratic government? And what are the consequences for me if the marriage is invalid?

The answer summarizes that a daughter born of Zina (unlawful sexual intercourse) has no guardian (wali) from her relatives due to the absence of 'asabah (agnatic kinship). Her marriage is to be undertaken by the legitimate Islamic judge (Qadi); if there is no such judge, then a Muslim man of standing, such as the Imam of the mosque or the director of the Islamic center, may act as her guardian, and the marriage contract will be valid in this case.