Mix ingredients: Add the corn, beans, orzo, red bell pepper, red onion, jalapeño, cilantro, mayonnaise, lime juice, vinegar, chipotle, chili powder, cumin, oregano, and Tajin to a large bowl. Mix well to combine. Add the kale if using. Use your hands to massage the kale into the salad. Adjust lime juice to taste. Season with salt and black pepper.