The Sixth Circuit has determined that the agency’s hardship determinations related to an unlawful presence waiver (212(a)(9)(B)(v)) and a fraud waiver (212(i)) are not reviewable by a federal court. Unlike the hardship determination for a cancellation of removal case, which is a mixed question of fact and law, hardship determinations related to these waivers are committed exclusively to the Attorney General.
The full text of Rahman v. Bondi can be found here:
https://www.opn.ca6.uscourts.gov/opinions.pdf/25a0058p-06.pdf