What will happen at the interview for deravitive asylee? A lot will depend on the interviewing officer. He may just ask them their names and a few questions intended to estublish relationship, and once satistied may approve. Or he may choose to ask questions as difficult as who were the witnessess at the engagement of the relationship, or what they had eaten the night before for supper. The important thing is that the family's narrative as a whole should be consistant. They are looking for inconsistancies. For the most part deravative asylees are not grilled to prove persecution; rather, they are screened to establish their relationship with the principal. Even if they are asked questions from the principal's file, which will happen, they are intended to make sure that the claimed the relationship is true.
Be consistant
As to what business does the IOM has in this matter. IOM is responsible for the most part arranging refugees for travel across the world. In some cases, the US government or other international entities contract the IOM to conduct medical exams, preliminary file screening or even fingerprinting. At the end the final interview is conducted by officers for the homeland security whether this happens at IOM compound or the US embassy...doen't not matter....good luck my friend....