A new agreement between the United States and Mexico will be a sweet one for a small handful of American sugar producers – but it will leave a sour taste in the mouth of U.S. packaged food makers, soda producers, restaurants, confectioners, and ultimately consumers. … How big a dent will this put in the wallets of consumers? The overall cost of sugar will go up by $1 billion for packaged food makers and soda companies, according to the industry group Sweetener Users Association.