Jefferson, the third president of the United States, criticized wigs, saying that what he hated most was the wigs of British judges. The scene of strange little eyes flashing blue light behind the wig is simply unbearable. The United States also abolished wigs and robes, but later restored robes. The atmosphere created by wigs, robes and other costumes highlights the extreme importance of the role of judge and the extreme importance of this position. The wig worn by the judge belongs to the official wig, indicating his official position. Is to create an atmosphere, in case you can't tell it's a wig. Therefore, this kind of wig gives people a special feeling of "dehumanization", that is to say, the person wearing the wig does not look like a human being, which embodies the idea of treating the judge as inhuman, non-god, half-man and half-god.
Of course, the requirements in some places are not necessarily so strict now, and sometimes there will be empty robes without wigs.