Final answer:
The executive branch 'checks' the legislative branch through the use of the veto power. This dynamic is a critical component of the checks and balances system which helps maintain a balance of power between the branches of government. The legislative branch can override a veto with a two-thirds majority, also known as a supermajority.
Step-by-step explanation:
Using the veto power is an example of the executive branch “checking” the legislative branch. This is because the executive, represented by the President, can veto a bill passed by the legislative branch, which consists of the House of Representatives and Senate. It's a fundamental aspect of the system of checks and balances designed to prevent any one branch from becoming too powerful.
The legislative branch can respond to a presidential veto if they can muster a two-thirds majority, known as a supermajority, to override the veto. This ensures that the President's power is not absolute and that the legislative branch has the means to exercise its authority if there is significant support for the legislation.