The American Farm Bureau estimates that Cuba could eventually become a $1 billion agricultural export market for products of U.S. farmers and ranchers. The embargo stifles another $250 million in potential annual exports of fertilizer, herbicides, pesticides and tractors. According to a study by the U.S. International Trade Commission, the embargo costs American firms a total of $700 million to $1.2 billion per year. Farmers in Texas and neighboring states are among the biggest potential winners. One study by Texas A&M University estimated that Texas ranks fifth among states in potential farm exports to Cuba, with rice, poultry, beef and fertilizer the top exports.