Can a U Visa Applicant Get Permanent Residency Based on Marriage

[lawfacts]

A man who has been in the U.S. for five years petitioned for a U visa in 2015, and no decision has been made on his petition. He is now married to a U.S. Citizen. May his spouse petition for him to adjust his status based on marriage?

[Mr. Knowitall]

Without knowing more about the background of his case -- including whether he entered the U.S. lawfully and on what type of visa -- I'm loathe to guess as I could be completely wrong. Also, immigration policy is in a state of flux. He should consult an immigration lawyer about his options.