You can probably make him a green card holder. Once he has a green card for a certain number of years, he can file for naturalization and become a US citizen. First, make sure he is "admissible". He needs proof of admission (usually, his passport, a visa, form I-94, a entry stamp in his passport indicating date of antry, admitted till a certain date in the future). Make sure he doesn't have any criminal history. Make sure he has not done immigration fraud, used fake documents, been ordered deported, was actually deported, etc... A lawyer should should help you with all these issues. As your spouse, the process (called adjustment of status) takes about 4 months.
Answered on Mar 02nd, 2012 at 2:43 PM