I had to look up the Cyrillic spelling of his name to be sure I wasn't misunderstanding.
I guess some English speakers would be more comfortable with J for that sound.
Source: https://en.m.wikipedia.org/wiki/Romanization_of_Russian
In that table, literally none of the standards cited use j for ж. J is often used for й, or part of я, ю, ё.
In Soviet international passports, transliteration was based on French rules but without diacritics and so all names were transliterated in a French-style system.
"French-style system" links to this article in French: https://fr.m.wikipedia.org/wiki/Transcription_du_russe_en_fr..., which transliterates ж to j.
It is confusing that this mapping is missing from the table in the English article.
It’s possible to change your spelling in the US documents but now different documents have different spelling.