Description Twins Juli.n and Joaquin Castro are political forces, but their story began in a small room in San Antonio, Texas, that they shared with their grandmother Mamo. When Mamo was a girl she crossed into Texas from Mexico, marking the start of the Castros? American journey. When Juli.n and Joaquin were kids, they learned about activism from their single mother, who helped improve the barrio through local government. She inspired the twins to get involved in politics, and Juli.n and Joaquin have been working at the local, state, and national level - as a presidential candidate and former Cabinet member, and a U.S. Congressman, respectively - to make the country a better place for everyone.