text: Unfortunately you didn't provide enough information to get a clear answer as much depends on your citizenship and your plans. However, even if you are an American citizen he will not be able to enter the United States without a visa, husband or not.  Visa free entry to the US is only for American citizens or citizens of the 39 countries in the Visa Waiver Program (Argentina lost this status in 2002).  Of course, if he is Argentine, he is probably also eligible for citizenship in Spain or Italy (through his ancestry), which passport he could use to come and go freely, for stays up to 90 days.\n\nIf you get married abroad, you will have to file an I-130 petition to get him an immigrant visa in order to enter the United States.  If you reside in Argentina, you can do this in BA.  Buenosaires.USEmbassy.gov. \n\nIf you are truly resident there, meaning usually for more than six months, you can go into American citizen services and file your I-130 petition.  In about six months your husband will have an interview and a physical.  If all is okay, he will get his immigrant visa and then one he arrives in the US, he will be able to get his green card.\n\nAlternately, you could choose to file an I-129 for a fiancee visa, which will have him apply at the Embassy in about a year for a fiancee visa (K-1) to come to the United States for the wedding.  After the wedding, which has to take place within 90 days, he will start the process for his green card.\n\nA third option if you are living in Argentina and have no plans to live in the US is for him to get a tourist visa, which he can use if he can show ties to his country of residence.  A tourist visa is not available to intending immigrants, however, and should not be used to enter the US to get married (a consular officer knowing this fact would refuse anyway) nor to reside.  However, if you can show that you are a bonafide expat, and that he has ties there, it shouldn't be a problem to get a tourist visa.\n\nSo you see, if I knew your situation better I could advise you better, as it really varies.  Good luck.