In the 1944 case of Williams v. Kaiser, Warden, the United States Supreme Court ruled in favor of petitioner Williams. The case revolved around a habeas corpus petition filed by Williams who was serving a life sentence for murder in California state prison. He claimed that his constitutional rights were violated as he had been denied counsel during his trial and appeal process which led to an unfair trial and conviction. The court agreed with him stating that under federal law every defendant has the right to be represented by counsel at all stages of criminal proceedings including appeals if they cannot afford one themselves. This ruling reinforced the importance of legal representation for defendants regardless of their financial status ensuring fair trials for everyone.

In the dissenting opinion for Williams v. Kaiser, Warden, Justice Frankfurter argued that the majority's decision to grant habeas corpus relief was a departure from established principles of federalism and judicial restraint. He contended that it was not within the Supreme Court's jurisdiction to review state court decisions unless there were clear violations of constitutional rights or federal law. In this case, he believed that no such violation had occurred; rather, the petitioner had been given a fair trial in accordance with due process standards set by Georgia law. Therefore, he saw no grounds for granting habeas corpus relief and overturning his conviction on appeal. Furthermore, Justice Frankfurter warned against overstepping boundaries between state and federal courts as it could undermine public confidence in both systems' ability to deliver justice effectively.