In June, 2024, a “Future Circular Collider” (FCC) workshop was held in San Francisco. Gina Rameika, Associate Director for the Office of High Energy Physics at the Department of Energy's Office of Science, announced a new joint NSF/DOE organization to lead the U.S. effort on future Higgs factories. Professor Sarah Eno was named a leader of the “Higgs Factory Steering Committee” along with Srini Rajagopalan of Brookhaven National Lab. The committee also includes two members representing the International Linear Collider.
More information about the FCC can be found at: https://home.cern/science/accelerators/future-circular-collider.