S. 2199 would require the Department of Defense to issue regulations ensuring that optional combat boots worn by military personnel are made entirely in the United States, using only American-grown or American-produced materials and components. The bill applies to all service members across all military branches and gives the Secretary of Defense two years after enactment to establish these regulations. The legislation includes exemptions for boots designed to meet specific military needs that cannot be sourced domestically and for medically necessary boots required for individual service members with unique health conditions. This bill affects military personnel who choose to wear optional combat boots beyond their standard-issued footwear, potentially supporting domestic boot manufacturing. No specific funding amounts are mentioned in the legislation.