As vice president, JD Vance cast decisive votes in the U.S. Senate and focused on foreign policy, including controversial issues such as a possible U.S. takeover of Greenland and the U.S. role in the Russia-Ukraine War. Vance has served as lead negotiator in seeking peace with Iran, despite his opposition to the war.
Vance, widely seen as a likely candidate for president in 2028, broke sharply with Trump on Iran in the wake of significant Republican losses in the 2026 midterm elections. The day after Republicans lost control of both the House and the Senate, Vance wrote on social media, “The reason we lost is the war.”