| Year | Pres. | House | Senate | Democrats | Republicans |
|---|---|---|---|---|---|
| 1900 | R | R | R | ||
| 1904 | R | R | R | ||
| 1908 | R | R | R | ||
| 1912 | R | D | R | ||
| 1916 | D | D | D | ||
| 1920 | D | R | R | ||
| 1924 | R | R | R | ||
| 1928 | R | R | R | ||
| 1932 | R | R | R | ||
| 1936 | D | D | D | ||
| 1940 | D | D | D | ||
| 1944 | D | D | D | ||
| 1948 | D | R | R | ||
| 1952 | D | D | D | ||
| 1956 | R | D | D | ||
| 1960 | R | D | D | ||
| 1964 | D | D | D | ||
| 1968 | D | D | D | ||
| 1972 | R | D | D | ||
| 1976 | R | D | D | ||
| 1979 | D | D | D | ||
| 1980 | D | D | D | ||
| 1981 | R | D | R | ||
| 1984 | R | D | R | ||
| 1988 | R | D | D | ||
| 1992 | R | D | D | ||
| 1996 | D | R | R | ||
| 2000 | R | R | R | Even as elements in Iran press for reform, the country still supports international terrorism, strives to acquire weapons of mass destruction, and represses its citizens, as evidenced by the immoral trial of 13 Jews in Shiraz. Ultimately, we must judge Iran by its actions. Al Gore will make an all-out effort to halt Iran’s acquisition of weapons of mass destruction and delivery systems. | |
| 2001 | R | R | D | ||
| 2004 | R | R | R | Under President Bush’s leadership, the United States is working with responsible governments and international institutions to convince the leaders of North Korea and Iran that their nuclear weapons ambitions are deeply contrary to their own interests. |
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| 2008 | R | D | D | The world must prevent Iran from acquiring nuclear weapons. That starts with tougher sanctions and aggressive, principled, and direct high-level diplomacy, without preconditions. . . We will continue direct diplomacy and are committed to working with our partners through the six- party talks to ensure that all agreements are fully implemented in the effort to achieve a verifiably nuclear- free Korean peninsula. | As a rogue state, Iran’s leadership supports terror, threatens its neighbors, and provides weapons that are killing our troops in Iraq. We affirm, in the plainest words we can use, that the U.S. government, in solidarity with the international community, will not allow the current regime in Tehran to develop nuclear weapons. |
| 2012 | D | R | D | The President is committed to using all instruments of national power to prevent Iran from acquiring nuclear weapons. . . President Obama believes that a diplomatic outcome remains the best and most enduring solution. At the same time, he has also made clear that the window for diplomacy will not remain open indefinitely and that all options – including military force – remain on the table. | Iran’s pursuit of nuclear weapons capability threatens America, Israel, and the world. That threat has only become worse during the current Administration. A continuation of its failed engagement policy with Iran will lead to nuclear cascade. In solidarity with the international community, America must lead the effort to prevent Iran from building and possessing nuclear weapons capability |
| 2015 | D | R | R | ||
| 2016 | D | R | R | We support the nuclear agreement with Iran because, as it is vigorously enforced and implemented, it verifiably cuts off all of Iran’s pathways to a bomb without resorting to war. We reject Donald Trump’s view that we should have walked away from a deal that peacefully dismantles Iran’s nuclear program. | We consider the Administration’s deal with Iran, to lift international sanctions and make hundreds of billions of dollars available to the Mullahs, a personal agreement between the President and his negotiating partners and non-binding on the next president. . . A Republican president will not be bound by it. We must retain all options in dealing with a situation that gravely threatens our security, our interests, and the survival of our friends. |
| 2018 | R | R | R | ||
| 2020 | R | D | R | Democrats will call off the Trump Administration’s race to war with Iran and prioritize nuclear diplomacy, de- escalation, and regional dialogue. Democrats believe the United States should not impose regime change on other countries and reject that as the goal of U.S. policy toward Iran. We believe the Joint Comprehensive Plan of Action (JCPOA) remains the best means to verifiably cut off all of Iran’s pathways to a nuclear bomb. | |
| 2024 | D | R | D | Through aggressive diplomacy backed by U.S. military power, the Administration has worked alongside our allies and partners to deter and defend against Iran and its terrorist surrogates. President Biden has postured U.S. military forces in the region and authorized precision airstrikes on key Iranian-linked targets tied to attacks against U.S. troops to deter further aggression by Iran. |