place oil in a heavy bottom pan on med. add onions and saute til soft about 4 minutes. Add taco seasoning and stir to coat onions. add chili sauce and chicken broth. Bring to a boil add cooked chopped or shredded chicken and white beans(undrained) and reduce heat and simmer for 20 minutes. don''t worry if its thin. after 20 minutes use a potato masher to mash the beans slightly. this will thicken your chili up. add corn. Simmer another 5 minutes or so and add cheese stir to thicken.
Serve hot with toppings like shredded cheese, salsa, sour cream and tortilla chips.