It's peak harvest season in America's soybean belt, but many farmers say they have no one to sell to.

Trade war tariffs have made U.S. soybeans less competitive on the global market, pushing buyers to shift toward cheaper suppliers in South America. Argentina has even suspended its 26 percent export tax, triggering a surge in global demand while American crops pile up in silos.

U.S. President Donald Trump has promised financial aid, but farmers say handouts won't fix the problem; what they need is access to the global market they once dominated.