Heat the grill to medium-high (or set the oven at 400 degrees)
Mix the 1 tsp salt, 1 tsp cumin, 1/2 tsp chili powder and 1/2 tsp cinnamon together in a small bowl
Place the pork tenderloins on a platter and rub the spice mixture all over the meat
Crush the cloves of garlic with a garlic press or chop them very fine
Combine the 1/4 cup brown sugar, 2 tbsp orange juice, 2 cloves garlic and 2 tsp Tabasco Sauce in a small bowl and stir to combine
Place the pork on the grill and cook, turning once, until the internal temperature reaches 145 degrees - I like it a little pink but if you prefer it to be more well done, cook it to 155 or 160 degrees). The time will depend on the size of your tenderloins, but it will be about 8 - 10 minutes per side
When the pork is almost done, brush with the glaze and cook for 2-3 minutes per side
If you don't have a grill, sear the pork tenderloins in a hot pan with a bit of olive oil, brush with the glaze and place in the oven to roast - Again, the time will depend on the size of the tenderloins, but about 20 minutes for 145 degrees and 30 for 160 degrees.
Remove the pork from the grill and let it rest for 15-20 minutes. Resting ensures the meat will be juicy
After the pork has rested, slice it into 1/2" pieces