

Don’t keep voting to approve his nominees, for one. Put a hold on each and every one of them. Vote against all of the laws the republicans are putting through congress. Filibuster everything. Basically, act like the republicans have since 1992.
They could start with that.
“All billionaires will be summarily executed and their assets will be distributed to the citizenry, and the Heritage Foundation will be declared a terrorist organization, and all current and past leaders, funders, employees, and judges endorsed by them will be immediately sent to a prison camp in El Salvador” seems like a winning message.
And anything the president wants only needs an executive order, it seems, so it should be pretty easy to implement.