Why did fdr try to change the balance of power on the supreme court? a. he needed the court’s support for upcoming war measures against germany. b. he was worried about being able to run for a third term as president. c. he feared the supreme court might invalidate the wagner and social security acts. d. he feared that the supreme court might invalidate the national recovery act or the agricultural adjustment act. e. he feared that the supreme court might deem sit-down strikes unconstitutional.