Patriotic tamales prepared for Mexican Independence celebrations are a festive tradition. This protein-rich, family dish is a fresh, traditional centerpiece of September celebrations.
Soak the dried corn husks in hot water for at least 45 minutes, weighting them down to keep submerged until pliable.
In a large bowl, beat the lard or vegetable shortening with the baking powder and salt until fluffy, about 3–5 minutes on medium speed.
Gradually add masa harina, alternating with chicken broth, mixing until a smooth, spreadable dough forms without over-mixing.
Lay out a softened corn husk, spread about 2–3 tbsp of masa mixture in the center, add 2 tbsp shredded chicken and a spoonful of green salsa.
Fold the sides of the husk toward the center, then fold up the bottom. Tie with a strip of husk if desired to secure.
Arrange tamales upright in a large steamer pot with the folded ends down. Cover with remaining husks and steam over medium heat for 1.5 to 2 hours, checking water level and adding hot water as needed.
To check doneness, carefully open one tamal—the masa should pull away cleanly from the husk and be firm. Let stand for 10 minutes before serving.