If you are applying to take your fiancee back to the US then the processes should be reasonably easy. These are the basics of the K1 Visa process and the steps which do get followed. Speak to a lawyer if you are not certain about anything.
If you have a fiancee that is not a US citizen and you wish to take her back to the United States for the purposes of marriage then you need to apply for a US Fiancee Visa also known as a K1 Visa.
There are certain conditions which the US government does not allow. These pertain to a spouse, fiancee or applicant who has either overstayed in the US before, has HIV/AIDS or other contraventions of the US immigration laws. Incoming search terms:k1 Ineligiblek1 visa ineligiblewhat are the diseases ineligible for k1 visa
If you are the wife/spouse of a US citizen then you can apply for a K3 Spouse Visa to enter the United States of America. You can apply for a non-immigrant K3 Visa outside of the US to join your husband in the United States. Incoming search terms:can i apply k3 visa outside united states
Once you have married your fiancée in the United States within the 90 day period you have to adjust her status and file for an adjustment of status. This will allow her more rights in the United States and is in fact a Green Card. Incoming search terms:arrived connecticut in fiancee visak1 adjustment of statusk1 visa arrived [...]
If your wife has children or a child and she has applied for a K3 Visa or a CR1 Visa then you would also need to ensure that you apply for a K4 Visa for the children. These are the requirements for the K4 Visa from US immigration. Incoming search terms:k4 visa requirementsrequirements for k4 [...]
