Three safeguards against abuse of presidential power are Congress, Supreme Court, and the ability of Congress to impeach.
There are no executive powers that are held by the Senate. Executive powers are reserved only for the President of the United States.
The Constitutional definition of those powers is broad and unspecific.
It is written in the Constitution of United States of America in the Section I of the Article II that the Executive Department is consisted of the President, Vice President, and Cabinet members.
The Congress and the Supreme Court provide a constitutional check on the President's powers
The Congress and the Supreme Court provide a constitutional check on the President's powers
Congressional Powers
Constitutional powers can be classified as federal powers only. The Constitution does not give the right to the federal government to make laws in individual states.
It's comes from the presidential powers.
will there be powers in the future
Expressed Powers
implied
Yes