Cori Bush

In 2018, Bush launched a primary campaign against incumbent Democratic representative Lacy Clay in Missouri's 1st congressional district. Described as an "insurgent" candidate, Bush was endorsed by Brand New Congress and Justice Democrats. Her campaign was featured in the Netflix documentary Knock Down the House, alongside those of Alexandria Ocasio-Cortez, Amy Vilela, and Paula Jean Swearengin. Clay defeated Bush 56.7% to 36.9%.

In 2020, Bush ran against Clay again. She was endorsed by progressive organizations, including Justice Democrats, Sunrise Movement, and Brand New Congress, and she received personal endorsements from Vermont Senator Bernie Sanders, NY-16 Democratic nominee Jamaal Bowman, former Ohio state Senator Nina Turner, activist Angela Davis, and West Virginia Democratic Senate nominee Paula Jean Swearengin.

Bush narrowly defeated Clay in the primary election in what was widely seen as an upset. Bush received 48.5% of the vote, winning St. Louis City and narrowly losing suburban St. Louis County. Her primary victory was considered tantamount to election in the heavily Democratic district. Her primary win ended the Clay family's 52-year hold on the district. Clay's father, Bill, won the seat in 1968 and was succeeded by his son in 2000. The district and its predecessors have been in Democratic hands without interruption since 1911. No Republican has received more than 40% in the district since the late 1940s. With a Cook Partisan Voting Index of D+29, it is easily the most Democratic district in Missouri and tied for the 23rd-most Democratic district in the country.

As expected, Bush won the general election, defeating Republican Anthony Rogers with 78 percent of the vote.

In 2022, Bush ran for reelection to the seat. She was challenged by Steve Roberts, state senator, who received support from previous representative Lacy Clay. Bush won the Democratic primary with almost 70% of the vote.

In 2024, Bush ran for reelection to the seat. On August 6, 2024, Bush lost the Democratic primary to Wesley Bell, the prosecuting attorney of St. Louis County. The primary was the second most-expensive House primary in history, with $9 million in spending against Bush from United Democracy Project, AIPAC's super PAC. The organization targeted Bush after her criticism of Israel during the Israel–Hamas war. Bush was the second member of The Squad defeated in a Democratic primary in 2024 following George Latimer's defeat of Jamaal Bowman.

Soon after being sworn in, Bush was associated with"The Squad", an informal left-wing grouping in the Democratic caucus. She posted a photo on Twitter of herself, the four original Squad members, and another new member, Bowman, with the caption "Squad up."

On January 6, 2021, hours after rioters stormed the U.S. Capitol in a failed bid to overturn Donald Trump's loss to Joe Biden in the 2020 election, Bush introduced a resolution to remove every Republican who supported attempts to overturn the 2020 United States presidential election from the House of Representatives. In her support for Trump's second impeachment, Bush called the attack on the Capitol a "white supremacist insurrection" incited by the "white supremacist-in-chief".

In August 2021, Bush took a leading role in fighting to extend the CARES Act's eviction moratorium, sleeping on the steps of the U.S. Capitol to make her point; the CDC extended the moratorium on August 3.

On August 5, 2021, Bush defended spending tens of thousands of dollars on personal security for herself as a member of Congress while also saying Democrats should defund the police, saying, "I get to be here to do the work, so suck it up—and defunding the police has to happen. We need to defund the police." On November 5, 2021, Bush was one of six House Democrats to break with their party and vote with a majority of Republicans against the Infrastructure Investment and Jobs Act because it was not accompanied by the Build Back Better Act.

In 2022, Bush secured $750,000 in Community Project Funding for expansions to the Urban League facilities in North St. Louis, as well as funding for other area service organizations.

As of July 2022, Bush had voted in line with Joe Biden's stated position 93.0% of the time.

Bush was among the 46 Democrats who voted against final passage of the Fiscal Responsibility Act of 2023 in the House.

Following Bush's introduction of a ceasefire resolution in 2023, St. Louis County Prosecutor Wesley Bell announced his candidacy against her for the following election. Reports indicated that American Israel Public Affairs Committee (AIPAC) has marked her and other members of "the Squad" for "high dollar challengers." Co-founder for LinkedIn, billionaire Reid Hoffman, has also expressed intentions to fund opponents of both Bush and Tlaib.

On January 30, 2024, Bush confirmed reports that she was under investigation by the U.S. Department of Justice and Federal Election Commission for alleged misuse of federal security money. Bush also claimed the Office of Congressional Ethics had previously investigated the same allegations and voted unanimously to dismiss the case after finding no evidence of wrongdoing.

For the 2024 fiscal year, Bush secured over $13 million in federal earmarks to fund projects in the St. Louis area, including emergency food and shelter services and redevelopment for a housing complex. Total federal funds to Missouri were reduced from previous cycles as neither Missouri senator requested funds.

In September 2021, Bush was one of eight Democrats to vote against the funding of Israel's Iron Dome missile defense system.

She condemned Hamas's October 2023 attack on Israel. On October 16, 2023, Bush introduced a resolution calling for a ceasefire in the Israel–Hamas war. She condemned Israel's bombing of the Gaza Strip that killed thousands of Palestinian civilians in Gaza.

Bush and congressional allies, including Senator Roy Blunt, successfully advocated for the Federal Transit Administration Climate Relief Fund. According to Bush, "that fund was going to have zero dollars in it" to repair damage to public transit systems from severe storms and flooding in 2017, 2020, 2021, and 2022. Bush threatened to withhold her vote for the budget if FTA funds were not included.

For the 118th Congress:

• Committee on Oversight and Accountability
  • Subcommittee on Economic Growth, Energy Policy, and Regulatory Affairs (Ranking Member)
  • Subcommittee on National Security, the Border, and Foreign Affairs
• Committee on the Judiciary
  • Subcommittee on Crime and Federal Government Surveillance
  • Subcommittee on the Constitution and Limited Government

• Congressional Black Caucus
• Congressional Caucus for the Equal Rights Amendment (Bush co-chairs it with Ayanna Pressley)
• Congressional LGBTQ+ Equality Caucus
• Congressional Progressive Caucus
• Medicare for All Caucus

Bush is a progressive Democrat, supporting policies such as defunding the police; criminal justice and police reform; abortion rights; Medicare for All; a $15 minimum wage; tuition-free state college and trade school; and canceling student debt. She was endorsed by, and is a member of, the Democratic Socialists of America. Bush supports the Boycott, Divestment and Sanctions (BDS) movement and has called Israel an "apartheid state". She stands "unwaveringly with Black Lives Matter's demands".

Bush advocated defunding the United States Armed Forces during her campaign. After receiving criticism from California Representative Kevin McCarthy and a St. Louis Post-Dispatch editorial, Bush clarified that she supported reallocating defense funding to healthcare and low-income communities.

After supporters of then-president Donald Trump stormed the United States Capitol on January 6, 2021, Bush introduced a resolution to investigate and expel members of the House who promoted the conspiracy theory that the 2020 presidential election was stolen from Trump. On January 29, after House Speaker Nancy Pelosi accepted her request, Bush changed offices from the Longworth House Office Building after Congresswoman Marjorie Taylor Greene "berated" her and her staff in a hallway and refused to wear a mask. Greene accused Bush of calling for violence against a couple involved in the controversial July 2020 march through a gated St. Louis street.

On July 18, 2023, she was one of nine progressive Democrats to vote against a congressional non-binding resolution proposed by August Pfluger, which states that "the State of Israel is not a racist or apartheid state", that Congress rejects "all forms of antisemitism and xenophobia" and that "the United States will always be a staunch partner and supporter of Israel." Bush introduced the Ceasefire Now Resolution in Congress on October 16, 2023, with that measure calling for a ceasefire as well as increased humanitarian aid during the 2023 Israel-Hamas war.

In a 2022 interview with the PBS news program The Firing Line with Margaret Hoover, Bush recounted a story from her biography about healing a homeless woman with tumors. She stated, "This lady came to us and she had these tumors. She wanted us to feel them" adding that as soon as she touched them, "The lumps that were there were no longer there and she was so happy and she went on about her day". When asked for her response to people who might not believe her story, Bush explained “they are not the woman that had the tumors".