Biden took down his tax returns for 2017 and 2018 from his campaign webpage... three weeks BEFORE the Mar-a-Lago raid!
They already knew, before the raid, that Biden HAD these classified documents, AND that the documents would reveal that Hunter had paid Joe $50k a month in rent... AND that this rental income was NOT reported on the appropriate tax forms.
They knew this would cause them trouble. So they took down the relevant income tax forms.
BEFORE THE TRUMP RAID.