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I see that for the IR1 visa, the couple has to be married for atleast 2 years. Also, I'm not sure I can apply for the IR visa while I'm residing in India - s this possible?
CR-1---> Close relative visa, IR-1--->>Immediate relative visa.
For CR-1 you don't need to be married for more than 2 years, you can be married the same day and apply, DCF and CR-1/IR-1 does the same thing. The only difference is that, with CR-1 your spouse will get 2 years of green card upon arrival in USA, where as with IR-1 yoru spouse will get 10 years of green card upon arrival. Now with CR-1, you will have to do further procession around the 21st month of your spouse being in USA, no extra fee, but you will have to fill up a few forms (I am not that educated about it because we have been married for more than 3 years, so that doesn't really apply to me)
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I'm not aware of the timelines associated with the IR/CR visas. It would be terrific if you could (or anyone else) can give me a sense of the times involved. I have browsed several forums, but most of the information available is for K visas and DCF.
No one can quote you a right timeline, but do say around 8 months to a year time for IR-1, but things are much faster now compared to last year because of the July backlog.
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Also, regarding the affidavit of support - you mean it would suffice if I had worked for 3 years in the US prior to applying for the visa?
Let me try to explain it as much as I can, say you leave for India to get married on August 2009, and you apply for your wife's DCF at around November 2009, given that it usually takes 3 months time for getting an interview date with DCF, say she gets her interview date around February 2010, so during her interview you will have to submite the tax transcripts of 2006, 2007 and 2008 (past 3 years, which you did work in USA, till July 2009). Now, god forbid something happens and your case gets delayed, and she gets her interview around April of 2009, then you will have to provide them with 2007, 2008 and 2009's tax transcripts.
So basically since yours is a short trip(compared to others who live for years in their spouses country), so do plan it before hand. Also it never hurts to make sure you have a joint sponsor.
About domicile, you can use any of your friend's address or if you have your rented house/apartment still on lease then you can use that also. Domicile is just so that they can send you the green card once you and your wife arrives in USA.
Hope it helps, do read the guides and make a wise decision.
Best of luck