As part of the North American Free Trade Agreement (NAFTA), the U.S. administration wants to limit the ability of Canada and Mexico to warn it’s own citizens about the dangers of certain food.

The New York Times:

Urged on by big American food and soft-drink companies, the [U.S.] administration is using the trade talks with Mexico and Canada to try to limit the ability of the pact’s three members — including the United States — to warn consumers about the dangers of junk food, according to confidential documents outlining the American position.

And

Some experts have likened the fight over food labeling to that over tobacco — and the fierce if ultimately unsuccessful opposition and lobbying that industry waged to prevent the imposition of health warnings on packaging. The [U.S.] administration’s position on food labeling reflects the desires of a broad coalition of soft-drink and packaged-foods manufacturers in the United States.