regarding sodium content FDA says:

"American adults, on average, eat too much sodium--between 4 to 6 grams (4,000 mg to 6,000 mg) daily"

"Under FDA's food labeling rules, the Daily Value for sodium is 2,400 mg. (Daily Values are a new label reference tool. See Daily Values' Encourage Healthy Diet in the FDA Consumer Special Report "Focus on Food Labeling.") FDA established this value because it is consistent with recommendations and government reports that encourage reduced sodium intakes."