Sources tell Reuters USDA will take part in the U.S. panel that will review the ChemChina acquisition of Syngenta. State-owned ChemChina and Swiss-based Syngenta agreed to the $43 billion acquisition earlier this year. However, U.S. lawmakers want a review of the deal. Lawmakers also asked that USDA be part of the review so “the potential impact of the transaction on domestic food security could be better assessed.” USDA and Treasury Department officials have declined to respond or confirm that USDA will be part of the review by the Treasury Department’s Committee on Foreign Investment in the United States. Syngenta said earlier this year it would make a voluntary filing with the committee for its deal with China’s state-owned firm “even though no obvious national security concerns were identified.” The ChemChina acquisition of Syngenta would be the largest foreign acquisition ever by a Chinese company.