It's not illegal.
No.
if an immigrant gets an aggrivated felony while in the US, they can and will have their residency taken away
Your status is "married." You are still a citizen of this country. There is no special status.
It is legal in the United States for an illegal immigrant to marry a US citizen. Once the marriage is legal, the illegal immigrant becomes a legal immigrant and can stay in the US for the course of the marriage.
Not unless they themselves are registered in court as an American citizen.
No he cannot
=An immigrant is NOT an alien.==The immigrant would still be legal because they were married to a US citizen.=
If they have a green card, they can work.
You do not need to be married any particular length of time to apply for US residency. Once you are married to a US citizen you can apply for residency right away. The process takes about 6 months to complete.
If you are a US Citizen, legally divorced or widowed, you can request permanent residency for your spouse, regardless of how you gained your citizenship.
Consult an immigration attorney before the marriage! There are certain forms and procedures that have to be followed in order for the citizenship to be granted. The first step is to get a green card. Citizenship requires a number of years of residency, filing the applications and passing a test. Then one can be sworn in as a citizen.
No it does not make him a citizen, but it you may sponser him for citizenship if you wish.