This bill prohibits the Department of Defense and the National Nuclear Security Administration from using funds for FY2022-FY2027 to reduce the nuclear forces of the United States. Specifically, no such funds may be obligated or expended to reduce (1) the total quantity of strategic delivery systems below the quantity of such systems as of January 1, 2021, (2) the quantity of deployed or non-deployed strategic delivery systems below quantities described as the Final New START Treaty Force Structure , or (3) the size of the nuclear weapons stockpile below the size of the stockpile as of January 1, 2021. Such prohibition does not apply to reductions made to ensure the safety, security, reliability, and credibility of the nuclear weapons stockpile and strategic delivery systems; temporary reductions in the quantity of nuclear weapons or deployed strategic delivery systems to facilitate the fielding of modernized replacements; nuclear weapons that are retired or awaiting dismantlement as of January 1, 2021; or reductions made pursuant to a treaty with respect to which the Senate has provided its advice and consent.