The article examines the role of the President of the Russian Federation in the national security system. The author analyzed the current legislation, determined the system for ensuring national security; analyzed the powers of the President in the field of ensuring national security; to propose ways of solving possible problems of national security. It is concluded that an effective system of “checks and balances” in the constitutional model of the separation of powers largely determines the internal stability in the state. Attention is drawn to the fact that the proposed amendments to the Constitution of the Russian Federation may lead to an increase in presidential power in the country and a shift in the levers in the system of checks and balances towards the head of state, when, at the moment, his influence on the branches of state power is great.