Trump has done it plenty of times but also, I see nothing wrong with it nor any way to make it illegal without a Constitutional Amendment. Judges, Justices, etc. should never be above criticism or even public opinion. They can and do ignore piblic opinion but they should be subject to it exavtly like anyone else. Personally, I think Clarece Thomas, Samuel Alito and John Roberts are all pieces of s**t who have been partisan hacks since Roberts became Chief Justice.