It varies anywhere from a few months to 2 years.
The length of time for the entire process depends on the number of U.S. Citizenship applications the USCIS offices receive in each state. Additionally, making a mistake on your application can cost you even more time.
Deported
U.S citizen
Not automatically. They have to apply for a green card and then apply for Naturalization.
If the marriage was purely for the purpose of obtaining a Green card and if the USCIS comes to know of it, then the Green card will be revoked. The person will get to lose the legal permanent resident status.
No, but the Russian may be able to get a green card but might be required to go back home during the paperwork phase.
Yes. Easily. Especially being a UK citizen, it does not require the UK citizen to go to the US if needed for the immigration process.
The citizen has to sponsor n is always the primary sponsor but, yes, co-sponsors are allowed.
Yes, a person who marries a green card holder may be eligible to apply for a work permit through the marriage-based green card process.
Yes, a person who marries a green card holder can potentially obtain a green card through marriage, but the process and eligibility requirements can vary depending on individual circumstances and immigration laws.
US Citizens can't be deported from the US. Any alien can be deported.
As the Nigerian requires a visa to enter the US, he /she can stay as long as the visa is valid. If the nigerian has a green card, then he/she can live in the US for any period of time as it gives them the permanent resident status.
Yes, a green card holder can marry a non-citizen.