"Under the Federal Crop Insurance Program’s unique public-private partnership, there are currently 15 private companies authorized by the United States Department of Agriculture Risk Management Agency (USDA RMA) to write MPCI policies. The service delivery side of the program — writing and reinsuring the policies, marketing, adjusting and processing claims, training and record-keeping, etc. — is handled by each private company. The program is overseen and regulated by the Risk Management Agency (RMA). The RMA sets the rates that can be charged and determines which crops can be insured in different parts of the country. The private companies are obligated to sell insurance to every eligible farmer who requests it and retains a large portion of the risk on over 80 percent of the policies written.
The federal government also subsidizes the farmer-paid premiums to reduce the cost to farmers. In addition, it provides reimbursement to the private insurance companies to offset operating and administrative costs that would otherwise be paid by farmers as part of their premium. Through this federal support, crop insurance remains affordable to a majority of America’s farmers and ranchers."
https://cropinsuranceinamerica.org/about-crop-insurance/how-it-works/
it took 3 minutes of research.