Mix meatball ingredients together; shape into small balls about 1/2-inch in diameter.

Sauce: In a large saucepan, melt butter or margarine.

Add chopped onion and cook slowly until lightly browned.

Add garlic, chili powder, cumin, oregano, tomato juice, and salt to taste.

Bring to a boil; drop meatballs into boiling sauce; cover and simmer for about 10 minutes, or until meatballs are cooked.