Buchanan is the president of The American Cause, a group founded by her brother, Pat Buchanan, a racist and anti-Semite. Though the organization is currently dormant, it hosted a number of anti-immigrant gatherings in the past featuring racist speakers.
For example, in January 2009 the organization held an event when it released a report on the impact of candidates’ views on immigration during the 2008 election. Panelists included Bay Buchanan, Peter Brimelow, a white supremacist and founder of the racist anti-immigrant website VDARE, and Marcus Epstein, founder of the now-defunct far-right Robert Taft Club. The Taft Club often invited racist speakers to address its gatherings, including white supremacist Jared Taylor, founder of The New Century Foundation, a self -styled think tank known primarily for American Renaissance , a white supremacist journal and companion website.
After Marcus Epstein was arrested and pleaded guilty to simple assault for attacking an African American woman in Washington, D.C., Buchanan defended him in a column published by VDARE titled “The Internet Lynching of Marcus Epstein.” Buchanan also contributed an article to The Social Contract (TSC) an anti-immigrant journal edited by white supremacist Wayne Lutton. At the 2011 Conservative Political Action Conference (CPAC), Buchanan spoke on a panel sponsored by the now-defunct racist student group Youth for Western Civilization (YWC) titled “Will Immigration Kill the GOP?” Kevin DeAnna, the founder of YWC, was also on the panel. In 2005, Buchanan was a guest on the racist radio program The Political Cesspool, hosted by white supremacist James Edwards.
Buchanan also served as chair for her brother’s three presidential campaigns and in 2008, was a senior advisor to former Colorado congressman Tom Tancredo, who is known for his anti-immigrant and anti-Muslim rhetoric. Buchanan also ran the now-defunct Team America Political Action Committee (PAC) founded by Tancredo.