Tortilla Soup with Black Beans

INGREDIENTS

• 1 tablespoon olive oil
• 4 garlic cloves, minced
• 1 teaspoon chili powder
• 2 cans (14 1/2 ounces each) diced tomatoes in juice
• 2 cans (15 ounces each) black beans, rinsed and drained
• 1 can (14 1/2 ounces) reduced-sodium chicken broth
• 1 package (10 ounces) frozen corn kernels
• Coarse salt and ground pepper
• 1 cup crushed tortilla chips, plus more for serving (optional)
• 1 tablespoon fresh lime juice, plus lime wedges for serving