Taco Salad for a Large Crowd

Ingredients

• 1-1/2 pounds ground beef
• 2 envelopes taco seasoning, divided
• 1 medium head iceberg lettuce
• 1 package (10 ounces) nacho-flavored tortilla chips, coarsely crushed
• 2 pints grape tomatoes, halved
• 2 cans (16 ounces each) kidney beans, rinsed and drained
• 3 cans (2-1/4 ounces each) sliced ripe olives, drained
• 1-1/2 cups shredded cheddar cheese
• 1 large sweet onion, chopped
• 2 cans (4 ounces each) chopped green chilies
• 1-1/2 cups Thousand Island salad dressing
• 1-1/3 cups salsa
• 1/3 cup sugar