Preheat the oven to 350 degrees F (175 degrees C).
Place ground beef in a large skillet over medium-high heat. Cook, stirring to
crumble, until evenly browned. Drain grease. Remove from the heat, and stir the
salsa, corn, mayonnaise and chili powder into the beef. In a 2 quart casserole
dish, layer the ground beef mixture, tortilla chips and cheese twice, ending with
cheese on top.
Bake for 20 minutes uncovered in the preheated oven, until cheese is melted and dish
is thoroughly heated.