There are a large number of genetically modified foodstuffs, including wheat, tomatoes, soybeans, and more. Although nobody realized the related health issues associated with improving crop yields, disease- and pesticide-resistance, etc. when these modifications were originally created, there is extensive research showing that adding non-plant genes to plants is harmful to humans.
Please override Congress' refusal to ban GMOs from the US market. Europe has banned them and enjoys much better health overall.