The supreme court, of the corporate United states, hands down United states v. Calandra: There is no Article V Amendment protection from bearing witness against oneself before a Federal grand jury; testifying before a Federal grand jury is still obligatory even when the summons is based on unlawfully seized evidence.
[added 11/11/2022]
Subsequent Events:
Authority:
“Law of the Jungle”
ccc-2point0.com/preface
References:
United States v. Calandra, 414 U.S. 338 (1974)
supreme.justia.com/cases/federal/us/414/338/case.html
Grand juries in the United States – Wikipedia, the free encyclopedia
en.wikipedia.org/wiki/Grand_juries_in_the_United_States