How? Trump was charged with two major crimes under Biden’s DOJ.

Also unless you’re a fascist like Trump you don’t sick your appointment to the US Attorney General position and DOJ on anyone, let alone a political opponent. Garland and the Smith indeed did investigate and ultimately charge Trump – but independently of some sort of Biden directive.

They couldn’t bring it to trial because Trump had already previously stacked the courts, who blocked Smith at every turn.

Edit: typo.