Preheat oven to 375° F. Lightly oil a baking sheet. Lay the prepared corn husks out onto a work surface.
In pie pan, mix together the chile powder, cumin, coriander, sugar, salt, and cayenne pepper.
Press each piece of pork tenderloin into the spice mixture and gently set in a corn husk.
Wrap the corn husk around the pork and tie securely with a couple pieces of butchers twine. Place each bundle onto a baking sheet.
Bake for 25 to 30 minutes or until meat thermometer reads 145°F.
Remove from oven and let rest for 5 minutes.
Remove from husks and twine and serve.