i am a us citizen wanting to marry a non citizen what is the procedure ? also he has a work authorization card for him to be able to be here for 2 yrs

if Your fiancé entered the country legally and does not have any immigration violations, criminal record or communicable disease, then you can sponsor your fiancé for an adjustment of status to his or her green card, even though your fiancé has overstayed his/her visa. The process can be commenced by hiring counsel anywhere in the US.