The Supreme Court's latest scandals boil down to a question as old as the Romans: 'Who will guard the guardians?'

• Supreme Court justices are under renewed scrutiny due to recently uncovered financial dealings.
• Revelations about Justices Clarence Thomas, Neil Gorsuch, and John Roberts highlight the lack of ethics enforcement.
• SCOTUS is the only court in the US where the justices police themselves, experts told Insider.

Supreme Court justices and America's top political brass are struggling to tackle a baseline ethics question that the Romans grappled with millennia ago.

"There's a really practical issue of, 'Who will guard the guardians?' That's a question that the Romans asked over 2,000 years ago," Doron Kalir, a professor at Cleveland-Marshall College of Law and an expert in legal ethics, told Insider.