The Supreme Court is susceptible to political polarization when it was designed to be nonpartisan.
A constitutional amendment that 1) Requires all future Supreme Court judges to be approved by a minimum of 60% of the Senate and 2) Officially sets the size of the Supreme Court to nine members who shall serve for life or until voluntary retirement 3) Requires the Senate to vote on all Federal judicial appointments within 90 days of submission by the President
Up until the last 10 years, Senate rules required all Federal judges to be approved by 60% of the Senate. During the Obama administration, Democrats changed the rules so that Federal (but not Supreme Court) justices only needed majority approval. After the Republican takeover of the Senate, the Republicans refused to consider President Obama's nomination of Justice Garland to the Supreme Court. Once President Trump was elected, Republicans further changed the rules for the Supreme Court to only require majority approval. Now some Democratic Presidential Candidates are proposing to add to the size of the Court and/or limit the terms of the justices in response.