Put the corn husks in a big bowl and cover them with hot water. Let them soak for 30 minutes, covered with foil.
In another big bowl, mix the lard and 2 tablespoons of broth until fluffy. In a separate bowl, mix masa, baking powder, cumin, and salt. Slowly add the masa mix to the lard and beat until it's all mixed together.
Add broth a little at a time until you have a soft dough. Beat it on high for 5 minutes until it's smooth like peanut butter. Cover it with a damp towel while you make the filling.
Heat some oil in a big skillet over medium heat. Cook onions for 5 minutes until they're clear, then add garlic for 30 seconds. Add green chiles and masa harina, cook for 1 minute, then take it off the heat. Mix in chicken, chili powder, cumin, salt, and cheese.
Take a corn husk, smooth side up, wide end at the top. Put about ¼ cup of masa in the middle, making a 4-inch square. Put 1-2 tablespoons of filling in a line down the center. Fold one side over, then the other, and fold up the bottom. Do this for all the tamales.
Put 1 ½ cups of water in the Instant Pot, then put in the trivet rack. Lay 4 corn husks flat on the rack. Put the tamales on top, open end up. You should be able to fit 24 tamales.
Put on the lid, set the valve to "Sealing," and press "Manual" for 35 minutes on high pressure. Let the pressure go down naturally.
Take off the lid and move the tamales to a baking sheet. Let them sit for 15–30 minutes before you eat them.