Congress and Party

The U.S. Capitol Building houses the bicameral Congress, composed of the Senate and the House of Representatives. This structure was a compromise during the Constitution's writing, balancing representation for small and large states. While initially not part of the constitutional design, political parties quickly emerged, becoming the primary division within Congress, leading to increased gridlock in recent years.

Partisanship acts as the glue holding Congress together, as members of the same party often share common goals. Party affiliation dictates congressional leadership roles in both the House and Senate. The Speaker of the House, always from the majority party, wields significant power in governing debates and bill progression. In the Senate, the Majority Leader manages the legislative agenda but has less control over debate due to rules allowing filibusters, which can be overcome only by a three-fifths cloture vote. Minority parties also have leaders, though they hold less power.

Standing committees, where most of Congress's work occurs, are organized along party lines. The majority party chairs all committees and holds more seats, allowing them to control committee actions and determine the fate of bills. While Congress resembles other national legislatures in its party organization, U.S. members are not strictly bound by party, owing their allegiance more to their constituents.

The role of parties in Congress depends on the ideological alignment of its members. For much of the 20th century, congressional parties were factionalized, with both Democrats and Republicans having liberal and conservative wings. This is illustrated by the 1965 Medicaid bill vote, where voting patterns crossed party lines. However, the 1964 Civil Rights Act initiated a significant political realignment, particularly in the South, leading to the Democratic Party becoming more liberal and the Republican Party more conservative.

Today's Congress exhibits a high degree of party unity, with almost all Republicans being conservative and almost all Democrats being liberal. Ideological overlap between the parties has virtually disappeared, as shown by voting patterns in the 2019-2020 Congress. This polarization allows parties to pursue assertive legislative agendas but weakens the political center, making compromise difficult and often leading to legislative gridlock, evidenced by a decline in bills passed.

Congress typically struggles to take the lead on broad national policy issues, a role often assumed by the President. This is due to Congress's bicameral fragmentation, separate leadership in each chamber, and individual members acting as free agents. Presidential leadership, even if not fully accepted, often serves as a starting point for legislative negotiations. However, Congress excels at handling narrow problems through its extensive committee system, allowing it to address multiple specialized issues simultaneously, as described by Woodrow Wilson as 'little legislatures'.

In summary, Congress is profoundly organized by political parties, which determine leadership and committee structures. Partisanship acts as a unifying force, especially with the increased ideological consistency within modern parties. This polarization has led to significant legislative deadlock. Despite its fragmentation hindering broad policy leadership, Congress's committee system makes it highly effective at addressing numerous narrower issues concurrently.