| 1 |
Invasion of Iraq (2003) |
275 |
87.86% |
1924 |
| 2 |
Deployment of Combat Forces to Vietnam (1965) |
148 |
47.28% |
1000 |
| 3 |
Indian Removal Act (1830) |
154 |
49.20% |
999 |
| 4 |
Support for the Overthrow of Iranian Prime Minister Mohammad Mosaddegh (1953) |
160 |
51.12% |
745 |
| 5 |
Senate Rejection of the Treaty of Versailles (1919) |
109 |
34.82% |
742 |
| 6 |
Forcible Removal of Cherokee Nation (1838) |
116 |
37.06% |
665 |
| 7 |
Withdrawal from the Paris Climate Agreement (2017) |
135 |
43.13% |
647 |
| 8 |
Limits on Jewish Refugees from Germany (1939-1944) |
124 |
39.62% |
617 |
| 9 |
Gulf of Tonkin Resolution (1964) |
95 |
30.35% |
574 |
| 10 |
Bombing of Nagasaki (1945) |
90 |
28.75% |
561 |
| 11 |
Secret Bombing and Invasion of Cambodia (1970) |
105 |
33.55% |
524 |
| 12 |
Chinese Exclusion Act (1882) |
121 |
38.66% |
506 |
| 13 |
Bay of Pigs Invasion (1961) |
117 |
37.38% |
472 |
| 14 |
Support for the Overthrow of Guatemalan President Jacobo Arbenz Coup (1954) |
100 |
31.95% |
408 |
| 15 (tie) |
Annexation of the Philippines (1899) |
79 |
25.24% |
380 |
| 15 (tie) |
Bombing of Hiroshima (1945) |
58 |
18.53% |
380 |
| 17 |
Enhanced Interrogation of Terrorism Detainees (2002) |
89 |
28.43% |
360 |
| 18 |
Invasion of Afghanistan (2001) |
72 |
23.00% |
342 |
| 19 |
Immigration Act of 1924 |
73 |
23.32% |
327 |
| 20 |
Support for the Overthrow of Salvador Allende (1973) |
87 |
27.80% |
326 |
| 21 |
Smoot-Hawley Tariff (1930) |
57 |
18.21% |
301 |
| 22 |
Nonrecognition of Haiti (1804) |
65 |
20.77% |
297 |
| 23 |
Crossing the 38th Parallel in the Korean War (1950) |
50 |
15.97% |
276 |
| 24 |
Overthrow of Ngo Dinh Diem (1963) |
49 |
15.65% |
255 |
| 25 |
Iran-Contra Affair (1986-1987) |
81 |
25.88% |
249 |
| 26 |
Mexican-American War (1846-1848) |
50 |
15.97% |
247 |
| 27 |
Withdrawal from the Iran Nuclear Deal (2018) |
89 |
28.43% |
237 |
| 28 |
Refusal to Recognize People’s Republic of China (1949) |
52 |
16.61% |
233 |
| 29 |
Withdrawal from the Trans-Pacific Partnership (2017) |
63 |
20.13% |
224 |
| 30 |
Support for the Mujahideen in Afghanistan (1981-1989) |
45 |
14.38% |
187 |
| 31 |
Intervention in Russia (1918-1920) |
36 |
11.50% |
174 |
| 32 |
NATO Expansion (1994) |
41 |
13.10% |
173 |
| 33 |
Spanish-American War (1898) |
23 |
7.35% |
133 |
| 34 |
War of 1812 |
24 |
7.67% |
130 |
| 35 (tie) |
Embargo of 1807/Non-Intercourse Act of 1808 |
20 |
6.39% |
117 |
| 35 (tie) |
Neutrality Acts (1935-1939) |
20 |
6.39% |
117 |
| 36 |
Truman Doctrine (1947) |
23 |
7.35% |
115 |
| 37 |
Dawes Act (1887) |
26 |
8.31% |
111 |
| 38 |
Platt Amendment (1901) |
23 |
7.35% |
99 |
| 39 |
Withdrawal from ABM Treaty (2001) |
26 |
8.31% |
96 |
| 40 (tie) |
Treaty of Versailles (1919) |
14 |
4.47% |
85 |
| 40 (tie) |
Recognition of Israel (1948) |
18 |
5.75% |
85 |
| 42 |
Annexation of Hawaii (1898) |
18 |
5.75% |
84 |
| 43 (tie) |
Nonrecognition of New Latin American States (1818) |
18 |
5.75% |
81 |
| 43 (tie) |
Indian Appropriations Act of 1871 |
16 |
5.11% |
81 |
| 44 |
Intervention in Libya (2011) |
23 |
7.35% |
78 |
| 45 (tie) |
Entry into World War I (1917) |
13 |
4.15% |
73 |
| 45 (tie) |
Embargo on Aviation Fuel, Scrap iron, and Oil to Japan (1940-1941) |
13 |
4.15% |
73 |
| 47 |
Management of the Collapse of the Soviet Union (1990-1991) |
13 |
4.15% |
69 |
| 48 (tie) |
Declaration of Neutrality in World War I (1914) |
11 |
3.51% |
63 |
| 48 (tie) |
Senate Rejection of the Comprehensive Nuclear Test Ban Treaty (1999) |
17 |
5.43% |
63 |
| 50 |
Monroe Doctrine (1823) |
10 |
3.19% |
58 |
| 51 (tie) |
Indian Appropriations Act of 1851 |
16 |
5.11% |
57 |
| 51 (tie) |
Admitting the Shah of Iran into the United States (1979) |
20 |
6.39% |
57 |
| 53 (tie) |
Vietnamization (1969) |
12 |
3.83% |
51 |
| 53 (tie) |
North American Free Trade Agreement (1993) |
13 |
4.15% |
51 |
| 55 |
Iran Nuclear Deal (2015) |
8 |
2.56% |
50 |
| 56 (tie) |
Dollar Diplomacy (1909-1913) |
11 |
3.51% |
49 |
| 56 (tie) |
Intervention in Nicaragua (1912) |
19 |
6.07% |
49 |
| 58 |
Entry into Korean War (1950) |
13 |
4.15% |
47 |
| 59 |
Economic Decoupling from China (2018-2020) |
15 |
4.79% |
43 |
| 60 |
Annexation of Texas (1845) |
12 |
3.83% |
41 |
| 61 |
Occupation of Veracruz (1913) |
8 |
2.56% |
40 |
| 62 (tie) |
Suppression of the Boxer Rebellion (1900) |
9 |
2.88% |
38 |
| 62 (tie) |
Interventions in the Dominican Republic (1912, 1916) |
16 |
5.11% |
38 |
| 64 |
Handling of the Cuban Missile Crisis (1962) |
5 |
1.60% |
31 |
| 65 (tie) |
Yalta Conference (1945) |
7 |
2.24% |
29 |
| 65 (tie) |
Support for Israel in Yom Kippur War (1973) |
10 |
3.19% |
29 |
| 67 (tie) |
Intervention in Lebanon (1982) |
0 |
0.00% |
23 |
| 67 (tie) |
Permanent Normal Trade Relations for China (2000) |
0 |
0.00% |
23 |
| 68 |
Pershing Expedition (1916) |
9 |
2.88% |
19 |
| 69 |
Teller Amendment (1898) |
10 |
3.19% |
17 |
| 70 |
Jay Treaty (1795) |
3 |
0.96% |
16 |
| 71 |
Washington Naval Conference and the Four-Power, Five-Power, and Nine-Power Treaties (1921-1922) |
3 |
0.96% |
15 |
| 72 (tie) |
Creation of the General Agreement on Tariffs and Trade (1947) |
2 |
0.64% |
13 |
| 72 (tie) |
Intervention in Kosovo (1999) |
2 |
0.64% |
13 |
| 74 (tie) |
Louisiana Purchase (1803) |
8 |
2.56% |
10 |
| 74 (tie) |
Creation of the United Nations (1945) |
2 |
0.64% |
10 |
| 74 (tie) |
Liberation of Kuwait (1991) |
1 |
0.32% |
10 |
| 77 (tie) |
Oregon Treaty (1846) |
2 |
0.64% |
8 |
| 77 (tie) |
Trent Affair Diplomacy (1861) |
1 |
0.32% |
8 |
| 77 (tie) |
Open Door Policy with China (1899-1900) |
1 |
0.32% |
8 |
| 80 (tie) |
Lend-Lease Act (1941) |
4 |
1.28% |
7 |
| 80 (tie) |
Suez Canal Crisis (1956) |
1 |
0.32% |
7 |
| 80 (tie) |
Taiwan Relations Act (1979) |
4 |
1.28% |
7 |
| 80 (tie) |
Override of Reagan’s Veto of the Anti-Apartheid Sanctions Bill (1986) |
3 |
0.96% |
7 |
| 84 (tie) |
Proclamation of Neutrality (1793) |
2 |
0.64% |
6 |
| 84 (tie) |
Adams-Onis (Transcontinental) Treaty (1819) |
4 |
1.28% |
6 |
| 84 (tie) |
Good Neighbor Policy Toward Latin America (1933) |
1 |
0.32% |
6 |
| 87 |
Formal Recognition of the People’s Republic of China (1979) |
1 |
0.32% |
5 |
| 88 (tie) |
Creation of NATO (1949) |
2 |
0.64% |
3 |
| 88 (tie) |
Creation of the World Trade Organization (1995) |
4 |
1.28% |
3 |
| 90 (tie) |
Alliance for Progress (1961) |
2 |
0.64% |
2 |
| 90 (tie) |
Camp David Accords (1978) |
1 |
0.32% |
2 |
| 92 (tie) |
Potsdam Agreement (1945) |
1 |
0.32% |
1 |
| 92 (tie) |
Panama Canal Treaties (1978) |
1 |
0.32% |
1 |
| 94 (tie) |
Treaty of Alliance with France (1778) |
1 |
0.32% |
0 |
| 94 (tie) |
Act Prohibiting the Importation of Slaves (1807) |
1 |
0.32% |
0 |
| 94 (tie) |
Anglo-American Convention of 1818 |
0 |
0.00% |
0 |
| 94 (tie) |
Purchase of Alaska (1867) |
0 |
0.00% |
0 |
| 94 (tie) |
American Relief Mission to Post-WWI Europe (1919) |
0 |
0.00% |
0 |
| 94 (tie) |
Destroyers-for-Bases Deal (1940) |
0 |
0.00% |
0 |
| 94 (tie) |
Tehran Conference (1943) |
0 |
0.00% |
0 |
| 94 (tie) |
Creation of the Bretton Woods System (1944) |
0 |
0.00% |
0 |
| 94 (tie) |
Creation of the Organization of American States (1948) |
0 |
0.00% |
0 |
| 94 (tie) |
Marshall Plan (1948) |
0 |
0.00% |
0 |
| 94 (tie) |
Berlin Airlift (1948-1949) |
2 |
0.64% |
0 |
| 94 (tie) |
Intervention in Lebanon (1958) |
2 |
0.64% |
0 |
| 94 (tie) |
Limited Test Ban Treaty (1963) |
0 |
0.00% |
0 |
| 94 (tie) |
Immigration Act of 1965 |
0 |
0.00% |
0 |
| 94 (tie) |
Kennedy Round of Trade Negotiations (1967) |
0 |
0.00% |
0 |
| 94 (tie) |
Nuclear Nonproliferation Treaty (1968) |
0 |
0.00% |
0 |
| 94 (tie) |
Opening to China (1971-72) |
0 |
0.00% |
0 |
| 94 (tie) |
SALT I Agreement and the ABM Treaty (1972) |
1 |
0.32% |
0 |
| 94 (tie) |
Helsinki Final Act (1975) |
0 |
0.00% |
0 |
| 94 (tie) |
Egyptian-Israeli Peace Agreement (1979) |
0 |
0.00% |
0 |
| 94 (tie) |
Salt II Treaty (1979) |
0 |
0.00% |
0 |
| 94 (tie) |
Intermediate Range Nuclear Forces Treaty (1987) |
0 |
0.00% |
0 |
| 94 (tie) |
Support for the Reunification of Germany (1990-1991) |
0 |
0.00% |
0 |
| 94 (tie) |
START Agreements (1991, 1993) |
0 |
0.00% |
0 |