The Ninth Circuit remanded a case where the petitioner displayed signs of mental indicia, but the Immigration Judge did not apply the standards of Matter of N-A-M- to determine if the petitioner was competent to participate in his removal proceedings.
The full text of Campos Mejia v. Sessions can be found here:
http://cdn.ca9.uscourts.gov/datastore/opinions/2017/08/29/15-70155.pdf