Summary

Portrait of Melville Fuller Melville Fuller In re Chapman (166 U.S. 661) — Opinion of the Court

Under the constitution, the senate of the United States has the power to try impeachments; to judge of the elections, returns, and qualifications of its own members; to determine the rules of its proceedings; punish its members for disorderly behavior; and, with the concurrence of two-thirds, expel a member; and it necessarily possesses the inherent power of self-protection.
Source: Wikisource

Portrait of Melville Fuller Melville Fuller In re Chapman (166 U.S. 661) — Opinion of the Court

Nevertheless, although the power to punish for contempt still remains in each house, we must decline to decide that this law is invalid because it provides that contumacy in a witness called to testify in a matter properly under consideration by either house, and deliberately refusing to answer questions pertinent thereto, shall be a misdemeanor against the United States, who are interested that the authority of neither of their departments, nor of any branch thereof, shall be defied and set at naught.
Source: Wikisource

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