The United States Supreme Court has recognized that judicial review of congressional impeachment rules and procedures is limited by non-justiciability doctrines

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In the case Trump v. Mazars, Congress issued subpoenas to obtain President Donald Trump's financial records from Deutsche Bank and Mazars accounting firm

Representative Thomas Massie's impeachment resolution accused Defense Secretary Pete Hegseth of waging an unauthorized and unconstitutional war in Iran

Under the United States Constitution, the House of Representatives possesses the sole authority to impeach executive officers, while the Senate possesses sole authority to try impeachments

White House Counsel Will Scharf asserted to Representative Robert Garcia that congressional investigations into the Trump administration must abide by constitutional guardrails

White House Counsel Will Scharf sent a letter to incoming House Oversight Committee Chairman Robert Garcia regarding legal limits on congressional oversight

In Trump v. Mazars, the Supreme Court ruled that Congress has constitutional authority to issue subpoenas to obtain documents related to the President

In Trump v. Mazars, the Supreme Court ruled that a congressional subpoena targeting the President's records must demonstrate a clear legislative purpose

In Trump v. Mazars, the Supreme Court held that congressional subpoenas for presidential materials must be narrowly tailored to advance an explicit legislative purpose

The Speech and Debate Clause of the United States Constitution protects members of Congress from state-level prosecution by local or state attorneys for official legislative speech

On August 31, 2026, the United States Supreme Court granted an emergency stay regarding plaintiffs' standing in litigation contesting Donald Trump's White House ballroom expansion project

A conviction on articles of impeachment in the United States Senate requires a two-thirds supermajority vote of senators present

The text of the United States Constitution does not contain an explicit grant of subpoena power to Congress

The Speech and Debate Clause of the United States Constitution establishes that members of Congress cannot be penalized for statements made during congressional debates

The text of the United States Constitution does not contain an explicit reference to congressional oversight powers

In his letter to Representative Robert Garcia, White House Counsel Will Scharf asserted that misuse of congressional oversight powers could reach a level of blatant criminality

The Speech and Debate Clause of the United States Constitution protects members of Congress against executive branch prosecution for official legislative speech

Justices Ruth Bader Ginsburg, Stephen Breyer, Sonia Sotomayor, Elena Kagan, Neil Gorsuch, and Brett Kavanaugh joined Chief Justice John Roberts's majority opinion in Trump v. Mazars

Chief Justice John Roberts authored the Supreme Court majority opinion in Trump v. Mazars

The text of the United States Constitution does not explicitly mention presidential immunity

The Twentieth Amendment to the United States Constitution, ratified in 1933, moved the start dates of presidential and congressional terms to January