Many Mexican restaurants in the United States use jack cheese on their dishes instead of traditional Mexican cheese. This is because jack cheese is easier to melt, has a milder taste, and is available in larger quantities. Jack cheese is also more affordable, which helps restaurants keep their prices competitive. Additionally, it is more convenient for restaurants to use one type of cheese for their dishes, as this simplifies their menu and makes it easier to prepare. In conclusion, jack cheese is a popular choice for Mexican restaurants in the United States because it is more affordable, easier to melt, and available in larger quantities.