Chestnuts are displayed at a food vendor as a person dressed as Santa Claus offers rides, Thursday, Dec. 12, 2024, in New York. (AP Photo/Alyssa Goodman)

FILE - Andy Newhouse, left, and William Powell harvest genetically modified chestnut samples at the State University of New York's College of Environmental Science & Forestry's Lafayette Road Experiment Station in Syracuse, N.Y., Sept. 30, 2019. (AP Photo/Adrian Kraus, File)

A vender displays chestnuts on Thursday, Dec. 12, 2024, in New York. (AP Photo/Alyssa Goodman)

FILE - Genetically modified chestnuts are labeled, weighed and bagged before being placed into cold storage at the State University of New York's College of Environmental Science & Forestry in Syracuse, N.Y., Sept. 30, 2019. (AP Photo/Adrian Kraus, File)

FILE - An unmodified, open-pollinated American chestnut bur grows on a tree at the State University of New York's College of Environmental Science & Forestry Lafayette Road Experiment Station in Syracuse, N.Y., Sept. 30, 2019. (AP Photo/Adrian Kraus, File)