On behalf of the U.S. Department of Energy, Chargé Theodore Allegra signed three amended protocols to the United States-CERN 2015 cooperation agreement on May 2. The agreements will enable the U.S. and CERN to contribute technical equipment and scientific expertise to support the U.S.-hosted Long-Baseline Neutrino Facility in Illinois and South Dakota as well as the High-Luminosity Large Hadron Collider Accelerator and Detector Upgrades at CERN. These cooperative efforts will seek to further understand how our universe works at its most fundamental level and are scheduled to be operational during the next decade.