The Ninth Circuit has determined that a Court need not provide an asylum applicant with notice of the corroborating evidence necessary to support his case and the opportunity to obtain that evidence if the applicant's testimony was not credible. The Court distinguished its decision in Ren v. Holder, which crafted this "notice and opportunity" requirement for applicants who had provided credible testimony.
The full text of Wang v. Sessions can be found here:
http://cdn.ca9.uscourts.gov/datastore/opinions/2017/07/03/14-72469.pdf