a funny thing Biden could do, unitary-executive-authority-wise is just order GSA to stop cutting paychecks to a bunch of Republican judges and law clerks for a while.
Just quietly do it and make it seem like its a big mixup or something that somehow is only affecting Federalist Society members. If Congress complains just claim executive privilege and then pardon the GSA administrator as many times as you need to.
Yeah that only works if you're a Republican. This is the fastest way to full scandal treatment by the press. The rules of the media are different for Dems and GOP. Don't believe me? How many front page stories for Trump using unsecured phones vs "her emails?"