This takes the form of court-imposed school districting for the purpose of desegregation. There are more than 100 of these still in effect across the U.S.
After a great deal of angsting, the courts ultimately decided that they could impose desegregation by imposing school districts.
In the past 15 years, courts have been making those certifications.
I wrote about a Feb. 2018 court cases rejecting the attempt of a mostly white city to escape one earlier: