This already happened. Andrew Jackson openly defied a Supreme Court ruling and forcibly removed Native Americans from their homes.

https://en.wikipedia.org/wiki/Worcester_v._Georgia

https://en.wikipedia.org/wiki/Trail_of_Tears

The only reason Brown v. Board of Education was enforced was because the President sent troops from the 101st Airborne Division to ensure black children were able to go to school.

https://en.wikipedia.org/wiki/Brown_v._Board_of_Education#Re...