Vance briefs Senate leaders ahead of fifth round of Iran nuclear talks

Vice President JD Vance briefed bipartisan Senate leaders on April 21, 2026, on the status of Iran nuclear talks ahead of an anticipated fifth round of negotiations. The Senate briefing was unusual; the Constitution's Treaty Clause vests ratification authority in the Senate by a two-thirds vote, raising questions about whether a resulting agreement would be submitted as a treaty or implemented by executive agreement without Senate approval.