good day.. my father commit fraud when he lied that his married in order to be US citizen and want to petition us again

Your father can petition for you again, but there is no guarantee that you will not have the same result. An individual who has committed marriage fraud or been suspected of such by U.S.C.I.S. or the American Consulate will have petitions for other children severely scrutinized. As your father's case appears to be fairly complicated, I suggest that he make an appointment with an experienced immigration lawyer to go through the type of risk that he would run if he petitioned for you again.Due to the limitations of the Lawyers.com Forums, Alan Lee, Esq.'s (the "Firm") participation in responding to questions posted herein does not constitute legal advice, nor legal representation of the person or entity posting a question. No Attorney/Client relationship is or shall be construed to be created hereby. The information provided herein by the Firm is general, and requires that the poster obtain specific legal advice from an attorney. The poster shall not rely upon the information provided herein as legal advice nor as the basis for making any decisions of legal consequence.