The Ninth Circuit has assumed that it has jurisdiction to review “a question of law or a mixed question of law and fact presented in a petition for review of an agency decision denying cancellation based on the absence of exceptional and extremely unusual hardship to family members.”
The full text of De La Rosa-Rodriguez v. Garland can be found here:
https://cdn.ca9.uscourts.gov/datastore/opinions/2022/09/27/20-71923.pdf
The Ninth Circuit has granted en banc review in this case: https://cdn.ca9.uscourts.gov/datastore/opinions/2023/03/22/20-71923.pdf