Joseph McKenna, Burdick v. United States — Opinion of the Court
“ If it be objected that the sensitiveness of Burdick was extreme because his refusal to answer was itself an implication of crime, we answer, not necessarily in fact, not at all in theory of law. It supposed only a possibility of a charge of crime, and interposed protection against the charge, and, reaching beyond it, against furnishing what might be urged or used as evidence to support it.This brings us to the differences between legislative immunity and a pardon. They are substantial. The latter carries an imputation of guilt; acceptance a confession of it. ”
