The Right has been obsessed with the courts for years - it excites them more than the Left

"But it’s even more likely that any such talk will provide new fodder for the Trump/GOP message that today’s Democrats are dangerously radical and contemptuous of constitutional norms (not that court-packing is the least bit unconstitutional if it’s done by Congress). At a minimum, conservatives will spend a lot of time telling Christian-right audiences that Democrats are now fighting fire with fire and plan to thwart their own government-by-judiciary schemes aimed at a constitutional counterrevolution. And let’s face it: All the threats to democracy that Bouie and others are warning of will get a lot worse right away if Republicans hang on to the White House and the Senate in 2020. If discussion of judicial reform makes that even infinitesimally more likely, it’s probably a topic that should be placed on a back burner until after the election."