The investigation began under Biden’s DOJ, not Trump’s.
If it was so bad that Biden’s AG, Merrick Garland, a very partisan Democrat, was investigating them it must be really, really bad!................
Of course it did. If you're Jill and you want your husband to be re-elected in 2024, you have to first get rid of all possible primary opponents, since you're already convinced that Trump will be in jail before the campaign begins.
At the time, Gavin Newsom was seen as a possible challenger to Joe Biden's nomination in 2024.