Today, Mexico announced new, tighter tariffs on American goods, including restrictions on U.S. chewing gum. Some say it's because of Teamsters, but the hatred of American chewing gum may harken back to a 19th century military coup. Exiled after numerous attempts to rule Mexico as a military dictator, General Antonio Lopez de Santa Anna (yes, that General Santa Anna) spent part of his time in exile in -- of all places -- Staten Island. Santa Anna planned to fund his new army with a secret asset: he intended to sell chicle to the Americans. Although the General thought it had more uses, inventor Thomas Adams found the stuff fun to chew on. A few years later, Adams flavored his gum, inventing Black Jack Gum, the oldest continually-made chewing gum in the United States. Sadly, due to recent tariffs, General Santa Anna's army-building Black Jack chewing gum will now cost 20% more to export to Mexico.