A claim of Fifth Amendment privilege must establish " 'reasonable ground to apprehend danger to the witness from his being compelled to answer ... . [T]he danger to be apprehended must be real and appreciable, with reference to the ordinary operation of law in the ordinary course of things,-not a danger of an imaginary and unsubstantial character, having reference to some extraordinary and barely possible contingency, so improbable that no reasonable man would suffer it to influence his conduct.' " Id., at 599-600 (quoting Queen v. Boyes, 1 Best & S. 311, 321 (1861) (Cockburn, C. J.)).
MASON v. US
HIIBEL v. SIXTH JUDICIAL DISTRICT COURT OF NEVADA, HUMBOLDT COUNTY