Yes, legal education in the United States has been tilted far to the left for decades, especially in the elitist law schools, and it's the left's plan to saturate the bench with their products, thus undermining the Constitution and the rule of law.
Of the nine on the SCOTUS now, for example, I believe that all but one is an alum of either Harvard or Yale law schools, the other from Stanford. So three elitist law schools account for the entire SCOTUS! No "diversity" there.
A good recent book about legal education in the US is "Schools for Misrule: Legal Academia and an Overlawyered America," by Walter Olson.
Of the 9 Justices, 3 graduated from Yale Law School (Thomas, Alito and Sotomayor) and 5 from Harvard Law School (Roberts, Scalia, Kennedy, Breyer and Kagan); Ginsburg graduated from Columbia Law School, but she started out at Harvard Law School and made Law Review, and only transferred to Columbia because her husband got a job in New York, so she’s pretty much a 6th Harvard there.