Then Obama will threaten to increase the size of the court to 27 and will populate it with his own rubber stamp hacks. This will intimidate the court into going along with anything he wants.
It has been done before.
I know FDR tried to pack the court and failed. How can a president increase the STOTUS? I don't think the conservatives on this court would be intimidated by this bonehead. FDR was very popular. Barack is not.