Clause 18 of this important section gives the legislative branch the power to make all laws which shall be necessary and proper, and to carry out the enumerated powers (U.S. Constitution, Article I, Section 8, Clause 18).
There are 81 calories in a 1/2 large Sweet Potato (Without Salt, Baked In Skin, Cooked). Calorie breakdown: 1% fat, 93% carbs, 6% protein.
Sugar Content. The sugar content in sweet potatoes is 4.2 grams for every 3.5 ounces of sweet potatoes that you ingest. While not terribly high or alarming, this confirms the presence of sugar just the same in sweet potatoes. As with all things, excess is bad, and this applies also to your sugar intake.