President Lyndon Johnson and President Richard Nixon had significant disagreements regarding the full support of the civil rights movement. Johnson was a strong advocate for civil rights and pushed forward legislation such as the Civil Rights Act of 1964 and the Voting Rights Act of 1965. Nixon, while he did support some civil rights initiatives, approached the issue differently and was often criticized for not being as committed to civil rights policies as Johnson was.
The other policies listed had varying degrees of support from both presidents, but the most notable disagreement would be in their overall approach to civil rights.