Dear Mr Knowitall
Thank you for you reply. I am referring to family-based category 1 "Unmarried Son or Daughter of US citizen" i.e. FB-1 immigrant visa. Sorry for the confusion.
Is there a grace period after entering the US with the immigrant visa endorsed before I could get married? I heard some cases may be regarded as "visa fraud" when getting married shortly after obtaining permanent residency.
What and how long are the process for obtaining permanent residency?

