After four decades drinking Coca-Cola sweetened with corn syrup, Americans are going to get the chance to buy the soda made from domestic cane sugar. But whether US farmers can meet that demand is unclear.

Very little of South Dakota’s corn is used to produce sweetened beverages, but the crop’s boosters in the state say a nationwide shift toward cane sugar is an unwelcome sign for corn farmers. Coca-Cola announced its intention to offer cane sugar-sweetened beverages this week.

Coca-Cola said Tuesday it will add a cane-sugar version of its trademark cola to its U.S. lineup this fall, confirming a recent announcement by President Donald Trump.

Health and Human Services Secretary Robert F. Kennedy Jr. declared that “sugar is poison.” Roughly three months later, Kennedy praised Steak ’n Shake for announcing that the fast-food chain would start offering Coca-Cola with real cane sugar instead of high-fructose corn syrup.