Why do we need to do this? Because this Green Card as a condition, a 2 year validity linked to the veracity of the marriage (a lot of people get married to obtain the Green Card and divorce afterwards).
Therefore, if you need to get rid of the 2 year condition we have to do a different process than the renewal one (for which you could start the process up to 6 months before it expires). Let's get into it!
For this process you can start the process up to 90 days before the Green Card expires (basically we have half of the time we would if renewing). And for this process we only need 1 document, I-751, or Petition to Remove Conditions on Residence. Quite simple
Besides the I-751 there is of course a fee (are we used to this yet?): $505 to cover the paperwork process and $85 to cover the biometrics process (yes, again). So a total of $590 as of January 2017.
Here you can find some tips about how to fill the documents and how to do the payments.
Otherwise, the paperwork process is pretty much the same as the Green Card application. Once you send the documents and the money you receive a receipt letter that informs you that the application has been approved. Then you get another letter informing you of the following step: the biometrics appointment (click here for more information on biometrics).
Well then, I hope that was useful. Good luck!
