Separation of Powers and Legislative Limitations on the Executive Branch

The framers of the Constitution implemented the principle of separation of powers to ensure that the governmental authority was not concentrated in any single branch. This principle not only delineates the roles of the legislative, executive, and judicial branches but also helps to achieve a system of checks and balances. As part of this design, each branch has its own responsibilities and the ability to limit the powers of the others.

Given this context, which of the following best illustrates a limitation placed on the executive branch by the legislative branch, thus demonstrating the principle of separation of powers?