For a tourist visa, what you need to show is that she has strong ties to Argentina and would return despite your being in the US. The fact that you would support her while here shows that she won't work while a tourist, but it doesn't show that she will return once the period of authorized entry expires.
If you want her to come wait here for a resident visa, you need a "k" visa, not a tourist visa. Getting your wife here is not really more difficult than getting a fiancee here, but getting a wife or a fiancee here to stay is more difficult than getting them here to visit.
Hiring a lawyer for these types of cases can be costly, but it can be even more costly to proceed without a lawyer and make serious mistakes. It will be better to apply for the correct visa for what you're trying to do than to try to circumvent the immigration laws, apply for the wrong visa, get denied, and end up with adverse consequences that are difficult to undo.
Please note that he information above is general in nature and is not intended to create an attorney-client relationship between us. It is intended simply as background material, is current only as of its indicated date, and may not include important details and special rules that could be applicable to your case. You should consult an attorney directly before acting or refraining from action.
Even if she was successful in obtaining a tourist visa, she may have problem entering the U.S. becasue she is married to U.S. citizen, you. In this situation, you should immediately file the I-130 and request an expedited processing. Please note that you may have problem with teh medical issue. You may have to file for a waiver.
Elkhalil Law Firm, LLC
Disclaimer: This answer is for informational and educational use only. This answer does not create attorney-client relationship. For more details, I recommend a private consultation with an immigration lawyer.
I agree with my colleague. You have to start K-3 process for your spouse to come to the U.S. as a permanent resident. Please go to ( http://travel.state.gov/visa/immigrants/types/types_2993.html ) for more information.
This answer is of a general nature and should not be relied upon as final, nor is it intended as legal advice. Consult with a qualified attorney before making any legal decisions. Gen Kimura, (832) 247-6932.