As long as the pardon met the conditions of the Constitution, as discussed below, it would have to be found within the President's powers. Besides, it would require a case be first brought to the Court through appeal and the plaintiff would have to show injury from the pardon. I can't imagine what that would include.
Organic fruits and vegetables also contain higher amounts of Vitamin A, Vitamin C, and sulfur, which all boost liver detoxification and cleansing. Broccoli, Brussels sprouts, kale, collards, apples, onions, garlic, and squash are all great choices. Also see: 10 Foods to Cleanse and Care for Your Liver.
The ALF also recommends eating high fibre foods and eating spices like turmeric, cinnamon, and licorice to detox your liver. Also avoid deep-fried and fatty foods, smoked, cured and salted foods, and desserts and snacks high in sugar.