Lend-lease act was a loophole that allowed American to lend or lease arms to great Britain without requiring cash payment. ... the United States would be able to lend or lease arms to any country considered "vital to the defense of the United States."
Answer:
The answer is in the 'necessary and proper clause' of the U.S. Constitution, better known as the 'elastic clause,' which allows Congress to make laws it needs to carry out its own powers.
Explanation: