The supreme court, of the corporate United states, decides Edelman v. Jordan: state residents may not sue their state in Federal court until after they have exhausted their due process remedies in the state courts.
[added 11/12/2022]
Subsequent Events:
Authority:
Article XI of Amendment
ccc-2point0.com/constitution-for-the-united-states
References:
Edelman v. Jordan, 415 U.S. 651 (1974).
en.wikipedia.org/wiki/Edelman_v._Jordan