The 14th Amendment wrote the Declaration of Independence's promise of freedom and equality into the Constitution. Ratified after the Civil War, this amendment transformed the Constitution forever and is at the core of a period that many scholars refer to as our nation’s “Second Founding.” Even so, the 14th Amendment remains the focus of many of today’s most important constitutional debates (and Supreme Court cases). In many ways, the history of the modern Supreme Court is largely a history of modern-day battles over the 14th Amendment's meaning. So many of the constitutional cases that Americans care about today turn on the 14th Amendment.
Constitution 101: Module 14: The 14th Amendment