In Dutch oven, melt butter with 2 tablespoons of the warm broth over medium-high heat. Add carrots, shallots, garlic, taco seasoning, pepper and salt. Cook 5 minutes, stirring occasionally, until carrots are tender. Gradually add flour, stirring with whisk. Cook 1 to 2 minutes, stirring constantly. Stir in whipping cream and remaining warm broth. Heat to boiling; add chicken, beans and corn. Reduce heat; simmer uncovered 5 minutes, stirring occasionally, until slightly thickened.