The Biden administration has been, among other things, a rebuke to Clintonian post-Reagan politics. The Biden presidency has been, in essence, policy reform presidency; not reformist towards changing systems, but reforming the policies and activity within those systems. That makes for an extremely fragile and personality based kind of reformism, but the scope of the policy differences is hard to overstate. The new regulatory posture is aggressive, the kind of regulatory policies that have been adopted are basically unheard of since FDR, the bully pulpit has been lent to union leaders, all sorts of stuff. But a huge amount of the Biden administration's efforts can be undone by replacing personalities, reversing executive orders, dismantling agencies, etc; a lot of it is very fragile because of of Biden's institutionalism and refusal to even go so far as to consider reforming systems rather than just reforming policies within systems.