Answer:
President Roosevelt's plan to "pack the court" would have granted the president the power to dominate the Supreme Court, imposing new adept justices on his policies in order to achieve almost immediate approval of all his policies.
This was attempted by President Roosevelt in 1937, through various legislative proposals that sought to add judges to the Court, although this was ultimately not approved and, therefore, many of Roosevelt's proposals within the New Deal process were determined as unconstitutional.