Yes, he/she can marry but it won't automatically grant him/her citizenship.
stay out of my country illegal immagrant
The illegal immigrant can take his United States citizen son to Mexico; however, it is highly likely that the illegal father will be detained at customs due to his lack of citizenship.
No.
either by flying to us and then goign through customs their or crossign at one of the border crossing between us and Canada or by sailing their on a boat and last but not least joining an illegal immagrant from Mexico
yes
It is 1,088.44 miles according to MapQuest.
Yes, but only if you apply for a green card.
No. He or she can and will be deported when the authorities notice his or her legal status.
No. An adult cannot adopt another adult.
Yes. You only loss your citizenship if found guilty of treason.
Yes. You guys shouldn't be here at all. You are breaking the law.
The citizen spouse has no recourse to the action as US immigration laws no longer allow a citizen spouse to apply for residency for an illegal immigrant spouse. The Mexican national will have to leave the US and file under the required USCIS regulations for reentry.