As long as you are a permanent resident of the United States, it is possible to bring your spouse to the US on an immigration visa. Because of immigration visa quotas that apply to permanent residence sponsors, however, the process will take considerably longer than it would take a US citizen. The entire process takes two to two and a half years on average, perhaps a few months more.

If you are a permanent resident rather than a US citizen, it will take you longer to complete the immigration process for your spouse than it would take a US citizen.