A constitutional amendment would propose that justices of the Supreme Court be appointed for a 10 year term. After 10 years, if he/she wished to continue on the court, he/she would have to runin an up or down vote nationwide. This change would not involve the present justices.
Why is this important?
In recent years the Supreme Court's decisions appear more and more political. This is not likely to change. Hence we need to change the Constitution as follows. A person would be appointed a justice for a 10 year term. After 10 years, if he/she wished to continue, they would have to stand for nationwide election on an up or down vote.