Take the chicken broth and boil it either in a 2 quart or large sauce pan then stir the couscous. After that cover this pot and remove it from the heat then allow it to stand for five minutes.
Bring a large bowl and whisk together lime juice, olive oil, vinegar along with cumin. Add red pepper, green onions, beans, corns and cilantro then, toss until it gets coated.
Make sure that you must fluff the couscous by breaking up all the chunks. Then, add the couscous with the vegetables and mix all of them well. Afterwards sprinkle it with salt and pepper as per your taste or liking and serve right away or refrigerate to serve cold.