Justices are chosen by a president.
Presidents are elected through FPTP, which is exacerbated by Congress being chosen by FPTP which leads to a partisan two party system.
This means that Presidents are often quite partisan, Clinton was probably the least partisan in the last 50 years, and they impeached him.
This means a Supreme Court justice in order to get noticed, has to be kind of partisan too. This then pushes the whole judicial system towards partisan politics.
Also, it's all about games. Look at all the justices there.
Trump in 4 years got three justice picks.
Obama in 8 years got two justice picks.
Bush in 8 years got two justice picks.
Of these Trump and Bush's first election, neither got the popular vote.
So, only one right wing Justice was put in place by a President who became president with the popular vote, Thomas, and he's corrupt.
It doesn't represent the US. It represents THE SYSTEM and the system is broken beyond belief.