The Ninth Circuit has held that the stop time rule’s reference to inadmissibility grounds are inapplicable to a lawful permanent resident who is not seeking admission to the United States. Thus, the petitioner’s admission to drug use did not trigger the stop time rule, because the inadmissibility ground for admission to the elements of a controlled substance offense had no application to him.
The full text of Nguyen v. Sessions can be found here:
http://cdn.ca9.uscourts.gov/datastore/opinions/2018/08/23/17-70251.pdf