The SCOTUS is the highest court. Their approval of Sessions' unrecusal prevents the leftists from using a lower federal court judge to issue an injunction against Sessions' unrecusal.
Last week, Sessions directed all US Attorneys nationwide to push back against nationwide injunctions issued by lower federal court judges. This has been a problem for decades, wherein the commies judge-shop to get injunctions against any action by Republicans that they want to stop.
Excellent news, I have not been able to keep up with a lot of news lately.