The Fifth Circuit has determined that it lacks jurisdiction to review a discretionary denial of cancellation of removal for lawful permanent residents, and that the factors in Matter of C-V-T- do not provide a legal standard sufficient for federal court review.
The full text of Ayala Chapa v. Garland can be found here:
https://www.ca5.uscourts.gov/opinions/pub/21/21-60039-CV0.pdf