The justices have signed a NONBINDING code of ethics. Not worth the paper it's printed on.
https://www.democracydocket.com/news-alerts/us-supreme-court-releases-nonbinding-code-of-ethics-after-public-pressure/?utm_source=Democracy+Docket+Newsletters&utm_campaign=150ab26774-EMAIL_CAMPAIGN_2023_07_18_06_01_COPY_01&utm_medium=email&utm_term=0_-9336cb8284-%5BLIST_EMAIL_ID%5D&mc_cid=150ab26774&mc_eid=e4053f3869