If I marry my fiance who is a foreigner while she''s here in US on a tourist visa can she legally stay here with me if I''m a US permanent resident?

Dear Sir, Thank you for posting your question.  Unfortunately there is not a category for fiances of LPRs to receive any sort of visa under current law.  If you fiance entered the US while on tourist visa, you may see if there is a way for her to remain in US legally through another visa category.  The key is for you to become a citizen and then you could petition for her at that time.  One of the things that you must watch out for is whether your fiance entered the US to gain immigration benefits while presenting herself as a tourist.  This is a significant issue that you must take into account.  In other words, if your fiance applied for the visitor visa but her true intention was to gain immigration benefits after her entry, it might be viewed by the USCIS to have not been forthcoming which could complicate her immigration process.  I would advise you to seek consultation with an experienced immigration attorney. Please let me know if you have any questions. Gus M. Shihab, Esq. The Law Firm of Shihab & Associates, Co., LPA