In a large soup pot or Dutch oven over medium heat, brown the beef with the bell pepper and onion. Drain any excess fat, if desired.
Add the broth, beans, corn, salsa, taco seasoning, and salt. Simmer over medium heat, stirring occasionally, for 15 minutes, until the vegetables are tender. Taste and adjust seasonings as desired.
Serve with tortilla chips, shredded cheese, avocado, lime wedges, or sour cream, as desired.