Albondigas (Mexican Meatball Soup)

2 bunches scallions, chopped
2 tablespoons vegetable oil
1 (7 ounce) can chopped green chiles
1 (28 ounce) can broken tomatoes
1 tablespoon Mexican oregano
1 teaspoon garlic powder
1/2 to 1 teaspoon salt
8 dried mint leaves
1 teaspoon ground cumin
1 quart water
2 pounds very lean hamburger
2 eggs
1/2 cup flour
1/2 teaspoon salt
1/2 teaspoon black pepper
1/2 teaspoon garlic powder

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