Dredge pork in flour.
Brown half the pork in 1 1/2 tablespoons hot oil in a large Dutch oven, turning once. Repeat procedure with remaining pork and oil. Stir in broth and next 7 ingredients; bring to a boil. Reduce heat, and simmer 1 hour and 30 minutes.
Stir in beans and corn; simmer 30 minutes. Spoon mixture down center of flour tortillas. Sprinkle with cheese, and fold sides over filling. Serve with desired toppings; garnish, if desired.