Securing America's Critical Minerals Supply Act This bill requires the Department of Energy (DOE) to secure the supply of critical energy resources that are essential to the energy security of the United States. As part of its duties, DOE must conduct ongoing assessments of the supply of critical energy resources, strengthen the supply chains for those resources, develop substitutes and alternatives to those resources, improve technology that reuses and recycles critical energy resources, and assess how energy security is affected by the reliance of the United States on the importation of critical energy resources.