Simone Campbell is a Roman Catholic sister, attorney, and poet who advocated for social justice, especially equal access to healthcare in the US in the twentieth and twenty-first centuries. Campbell worked as a lawyer and served the working poor in California. As of 2018, she works for NETWORK, a lobbying group in Washington DC that focuses on broadening access to healthcare by lowering costs. In response to proposed federal budget cuts that would disproportionately affect the poor, Campbell organized Nuns on the Bus, a group of nuns who traveled across the US to publicize the potential effects of the budget cuts. She also organized the Nun’s Letter that supported the passage of the Affordable Care Act. Campbell advocated for the Affordable Care Act that, once passed, increased access to affordable healthcare for women and children, and started a national dialogue about poverty in America.