The president gets his authority from the US Constitution as interpreted by the Supreme Court. Conducting foreign policy is one of his duties, to be shared with the US Senate.
The constitution
Benefits for Imperial Powers
President Jefferson used new presidential powers.
Congress and the president.
Military powers, treaties; appointments and temporary appointments
to limit the the President's war-making powers
Resulting Powers derive from the mass of delegated powers or from a group of them. They are an extension of implied powers.
Governments derive their powers from the consent of the governed.
Benefits for Imperial Powers
The people
from providence
The People.
He has the same powers as the US president
The powers of the Vice- President come from the requests of his/her president.
The President
President Jefferson used new presidential powers.
The word 'derive' basically means to trace from a source of origin. According to mathematics, to derive a particular statement is to use or apply logic, which can be done by beginning from the recognized facts. Like an educated guess.
In 1973 constitution , President had only nominal powers also called Fazal Illahi powers .