Propose constituional amendment setting number of US Supeme Court Justices at 9. Draws a major distinction right now and forces an answer. Next debate, "Will you support our Constitutional amendment to Keep the number of justices at 9." There is no escaping an answer.
Then the conversation becomes about their attempt to destroy the third branch of government.
I really hope somebody from the Trump campaign is paying attention.
It is about sending a message and building support.