The action that drove President Roosevelt into suggesting the plan shown (1) The Supreme Court had declared prominent New Deal programs unconstitutional.
President Roosevelt wanted to pass a new law that would lead to the number of Supreme Court Justices increasing so that he would be able to put more sympathetic justices in the highest court.
This happened because the Supreme Court was declaring a lot of New Deal Acts to be unconstitutional which was derailing Roosevelt's plans for the nation.
Find out more on Roosevelt's action at https://brainly.com/question/23009404.