Over medium heat, heat the same pot adding the chorizo and bacon. Cook meat until chorizo is browned and bacon is crisp, about 10 minutes. Add onion, garlic, oregano, chili powder, and cumin cooking until onion is translucent–about 5 minutes. Add 4 c. broth, tomatoes, and beans. Bring to a boil, then reduce the heat to medium, simmering for 20 minutes.