Immigration visas are issued by the government of the country where an applicant wishes to settle. While application processes vary between nations, typically filling out an application form and providing documents like birth certificate, passport and police clearance certificates is enough. As part of your application for immigration visas, you may also have to go through a medical examination and interview with a consular official. Some countries also require you to have a sponsor, such as an employer or relative. Each country varies in their criteria for evaluating applications; thus an applicant may apply under different categories depending on where they’re applying from; eligibility criteria vary as does waiting period length for each category and criteria set for them may also differ greatly between nations.