This link is for a pdf that reports decisions and actions from the Supreme Court. Specifically, on Jan 18.
page 4. “Soetero.”
How can Sotomajor and Kagan make impartial decisions about the person who gave them their jobs?
A life term gives a great degree of freedom from entanglements, but the entanglement is already there.
Note that on at least one other decision, “132,” it is noted that SCJ Kagan did not decide: “Justice Kagan took no part in the consideration or decision of this motion.”
So, if a SCJ does not participate, it is noted.