Offering Salah behind an Imam who commits some apparent sins

Q 1: Is it permissible to offer Salah (Prayer) behind an Imam (the one who leads congregational Prayer) whose wives do not wear Hijab (veil) nor are Islamically dressed despite his knowledge of such an obligation? And is it permissible to offer Salah behind an Imam whose garment reaches below his ankles?

A: An Imam who might commit some apparent sins should be advised to repent from them; otherwise he should be replaced with a more pious Imam, if possible. However, offering Salah behind the said Imam is valid In sha’a-Allah (if Allah wills).May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.