The veto power of the president under the u. s constitution best reflects the principle of

The veto power of the U.S. President under the U.S. Constitution best reflects the principle of checks and balances. The system of checks and balances in the U.S. Government divides the government into multiple branches of government that are given certain powers to "balance" or prevent other branches from becoming too strong. This system was put into place because of the monarchical rule which occurred in the colonies under the British Crown that the Americans believed was dictatorial and undemocratic. 

Iam not sure sorry