Answer:
- the Constitution and Congress.
Step-by-step explanation:
Roosevelt believed the Constitution as the law with the most noteworthy authority, which imply that as long as his decision does not violate the constitution, the presidential power would be legitimized.
He took the view that the President as a "steward of the people" should make whatever action necessary for the public good except if explicitly illegal by law or the Constitution." I did not usurp power," he stated, "but I did greatly broaden the use of executive power."