Why did eisenhower use federal troops in 1957?

In 1957, President Dwight D. Eisenhower used federal troops to enforce the desegregation of Little Rock Central High School in Arkansas. This decision came after Governor Orval Faubus deployed the National Guard to prevent nine African American students, known as the "Little Rock Nine," from entering the school. Eisenhower aimed to uphold federal law and protect the students' rights, demonstrating the federal government's commitment to enforcing desegregation following the Supreme Court's Brown v. Board of Education ruling.