Which part of Congress represents the interests of their state as a whole?

The Senate is designed to represent the interests of their state as a whole. Each state, regardless of its population size, is allocated two senators, which means that all states have equal representation in this chamber of Congress. This structure was established to ensure that the voices and concerns of smaller states are not overshadowed by more populous ones, promoting balance and equity among states in federal decision-making.

In contrast, the House of Representatives is composed of members whose numbers are determined by each state's population, meaning that larger states have a greater representation compared to smaller ones. While the Executive Branch is responsible for enforcing laws and the Judicial Branch for interpreting them, neither of these branches has a direct role in representing state interests within the legislative framework of Congress. The Senate's unique composition underscores its role as the chamber that provides statewide representation, with a focus on broader state interests as opposed to individual district needs.