As Lisa Needham reports, FEC chair Sean Cooksey is a Trump appointee, and has made noises about welcoming Trump's FEC complaint. And:
"The FEC took no action against [Trump] for routing payments through his former campaign manager, Brad Parscale, and refused to open an investigation into his hush money payments to Stormy Daniels."
https://www.publicnotice.co/p/trump-legal-challenges-harris-candidacy-bunk