Which principle supports President Eisenhower's action to uphold the U.S. Supreme Court's decision that public schools should be integrated?

President Eisenhower's action to uphold the U.S. Supreme Court's decision on school integration was primarily supported by the principle of federalism, which emphasizes the role of the federal government in enforcing civil rights. By intervening, Eisenhower asserted that federal authority was necessary to ensure compliance with the Court's ruling in Brown v. Board of Education, thereby reinforcing the rule of law and the protection of individual rights against state resistance. This action also reflected the principle of equality, promoting the idea that all students, regardless of race, should have equal access to education.