The Supreme Court, of the federal united States, decides Cummings v. Missouri, invalidating the clause of Missouri’s constitution of 1865 requiring loyalty oaths as a Bill of Attainder (pronouncement of guilt and sentence by a legislature—without a trial).
[added 9/12/2020]
Subsequent Events:
Authority:
Article I, Section 10, [Clause 1]
ccc-2point0.com/constitution-for-the-united-states
References:
George P. Fletcher, Our Secret Constitution: How Lincoln redefined democracy, (Oxford and New York: Oxford University Press, 2001), 84.
Cummings v. Missouri: Information from Answers.com
www.answers.com/topic/cummings-v-missouri