Vir International has optimum level of knowledge in dealing with USA Immigration Visa formalities for major categories. USCIS and NVC may demand precise information or document for any filed immigrant visa petitions. In many cases USCIS/NVC can demand documents in support of your claims for petition. In Fixed duration of time, applicants need to provide it to concerned offices to avoid denial of petitions. Ignorance to this will cause un-necessary delays. Vir International understands it very well and can help you to overcome for such hurdles in short span of time.