The article features a brief evaluation of the US military power based on the current level of expenses on defense. A multifaceted analysis of the structure of the US military budget and its transformation during D. Trump’s and J. Biden’s administrations is presented, as well as its potential impact on the national debt and budget deficit of the US. The article argues that military spending remained a priority in federal budget expenses during Trump’s presidency and continues to remain one of the most crucial budget priorities for J. Biden’s administration. The US reallocations of the military budget towards such expenses as “Research and Development” “Operation and Maintenance” which the Trump administration put into action allowed to continue the process of optimizing military forces to increase its combatant efficiency while limiting the burden of these expenses on US economy. The same practice is being conducted by J. Biden’s administration. The course of cutting taxes, while increasing defense spending during D. Trump lead to a 5-times increase of the budget deficit and a significant increase of the national debt, its 5 year payments will likely exceed the size of the US defense budget. The author concludes that Joe Biden’s administration is facing a challenging objective of supporting the economy's recovery after the Covid-19 pandemic and stabilizing the federal budget deficit, as well as national debt level.