Due to the overwhelming demand for immigration visas from these 4 countries, there is an extreme backlog in processing immigration applications for family members. The US only allows a certain number of immigrant visas each year. They are allotted on a per-country basis, and the relationship of the applicant and sponsor also affects the wait time. If you wish to sponsor a family member for an immigration visa, you should consider applying as soon as you are able, as it may take years for that individual’s classification to become current. Once your application is filed, you will have to wait until all the applications filed before yours are processed.