As the United States approaches the 250th anniversary of the Declaration of Independence this July 4, many observers reflect on the significance of the document beyond its common perception as the country’s founding moment. While the nation’s constitutional framework was not established until 1789, the Declaration of Independence in 1776 primarily articulated a set of foundational ideas that would come to define American identity.

Central to the Declaration are two historic propositions: that all individuals are created equal and endowed with unalienable rights, and that governments derive their legitimacy from the consent of the governed. These principles set a philosophical precedent distinct from the Constitution, which focused on creating a government structure with a balance of powers to prevent tyranny, yet did not directly reference human equality or democracy.

The tension between these founding documents persisted throughout American history. The Constitution’s system of federalism, which delegated significant authority to individual states, enabled the persistence of slavery under the banner of states’ rights, particularly in the South. During the pre-Civil War Lincoln-Douglas debates, Stephen Douglas emphasized respect for the sovereign will of the people regarding slavery. In contrast, Abraham Lincoln argued that the Declaration’s principle of equality superseded states’ rights, asserting that white majorities could not lawfully uphold slavery. Lincoln later reaffirmed this idea in his 1863 Gettysburg Address, highlighting 1776—rather than the Constitution’s ratification—as the nation’s true birth year, founded on liberty and equality.

Despite the passage of the 13th, 14th, and 15th Amendments, the country continued to confront opposition to these ideals through segregation and Jim Crow laws. It was not until the civil rights movement of the 1960s that the formal promise of equality began to be more fully realized. Today, debates endure between advocacy for states’ rights and efforts by the federal government to enforce civil rights protections, reflecting ongoing negotiation over the balance between national ideals and local authority.

Over time, American citizenship and identity, initially restricted to white men with property, expanded to include African Americans, Native Americans, women, and immigrants from diverse backgrounds. This evolution has been rooted in the Declaration’s core assertion of human equality and democratic governance.

However, some contemporary political figures have challenged the idea that American identity is solely based on shared ideals, instead emphasizing ancestry and heritage as defining factors. Discussions surrounding birthright citizenship reflect this shift, revealing tensions in how American identity is understood and legislated.

For many, including those with immigrant backgrounds, embracing the Declaration’s ideals remains central to their sense of belonging. This perspective underlines the continuing relevance of the Declaration of Independence as a document that enshrines principles rather than specific ethnic or racial identities.

As the country marks this significant anniversary, the enduring legacy of the Declaration lies in its promotion of universal ideas of equality and consent, which continue to shape and challenge the American national identity over two and a half centuries later.