If you followed the proper legal process to get married, then the marriage is legal. It doesn't matter if he's here illegally or not.
Yes.
no
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.
Yes the illegal would be deported and the U.S. citizen who entered into this fraud marriage fined and possibly jailed.
Yes, if he then becomes a legal resident There is nothing illegal about marriage, however, since the other one is an illegal immigrant, they are not likely to be granted citizenship simply because of the marriage. The two could be separated for many years.
No. He or she can and will be deported when the authorities notice his or her legal status.
Yes. If the illegal immigrant marries a citizen, they can become a citizen from that.
If you mean can the elder perform the marriage ceremony of a US citizen JW with a JW who is an illegal immigrant in the US then assuming that it is not illegal to do so then I would also assume that it is allowable.
My guess is no. You have to prove that you have a real marriage to stay.
Regardless if you are in the military or not, once you marry an illegal immigrant with a marriage of a year or longer, they are legally U.S. residence thereafter.
No
no