You live in USA, pledge allegiance to USA…then why are you going to Pakistan for the purpose of marriage? It is because of people like you that the number of spinsters in USA is sky rocketing. The is a serius crisis with huge number of unmarried educated single muslim ladies in your country. The other question you asked is how to know they are not trying to get a passport. For your information just about any Pakistani can go to a passport office and get a passport…even 2 of them as a matter of fact. If you had any knowledge about Pakistani society you would not ask such naïve questions