SNec, this is basically not a good idea. I worked as a Legal Assistant in Family-Based Immigration for a couple of years. What I’m going to tell you is based on my memory and my understanding of the law at that time (1998), but I impress upon you strongly to tell your friend that he absolutely must talk to an immigration attorney before he marries this girl.
There are non-profit offices that handle immigration. Check in your area, if he can’t afford a for-profit attorney.
They will absolutely get checked to see if the marriage is legit, entered into in good faith and not for immigration benefits only, and that they had and have a real relationship. Immigration will want to see proof of a relationship prior to the marriage. Like photos of them together, phone records showing they called each other, letters, emails, financial documents (ie - proof they were living together in the same apartment and paying rent). Immigration will likely interview their friends and family to verify they are/were a legit couple. Documents of this type are generally good to submit with the application, but INS can/will also ask for this afterwards.
They will have to be interviewed, seperately and together, about their relationship.
Your friend will have to submit all kinds of financial records to demonstrate he earns enough to sponsor her, if they pass the application/interview process.
The risk for your friend can be up to jail time, IIRC. The risk to your friend’s Italian friend can be deportation and a lifetime bar from re-entering the US, IIRC.
Do you know what type of Visa the Italian is here on? Is she a tourist? Is she a student? Is she working legally under an employment Visa?
The Italian should also talk to an Immigration attorney before proceeding. The office I worked in did this alot (if the immigrant met our income level requirements), just a review of their situation/options.
A US State’s recognition of the marriage as legal is completely seperate from the Immigration Law’s recognition of a legitimate marriage for purposes of immigration benefits.
Yes, they will have to remain married for a certain amount of time, typically. I won’t go into the exceptions to this, because I don’t remember them well.