He waited almost two years to take any action on this because he didn't want to look like it was a political attack but trump was going to play that card either way. If he had told them to start working from day one this wouldn't be happening. There was plenty he could have done but he was too wrapped up in the old system of traditions to understand that things have changed.

The supreme court literally said that anything the president does is legal as long as it's an offical act. He should have done whatever needed to be done. Regardless of the law. If people had problems with it we could have dealt with him after the fact and revised whatever laws needed to be revised. He's old as shit anyway so had nothing to lose. Instead he sat on his hands and allowed Trump to regain power leaving us to deal with the consequences while he will be dead before long anyway.