The Fourth Circuit has deferred to the Board of Immigration Appeals’ determination that the INA does not require an IJ to give a non-citizen seeking relief from removal advance notice of specific corroborating evidence necessary to establish his claim or grant an automatic continuance to allow him to obtain such evidence. However, the Court affirmed that statute requires the agency to determine whether the corroborating evidence was reasonably available.
The full text of Wambura v. Barr can be found here:
https://www.ca4.uscourts.gov/Opinions/191360.P.pdf