1. The correct answer is: the expressed powers.
Article 1, Section 8 of the Constitution lists 27 expressed powers of Congress. The most important powers include the power to tax, to borrow money, to regulate commerce and currency, to declare war, and to raise armies and maintain the navy. Some other powers regulate the rules of American citizenship, the rules of bankruptcy, the rules to organize all courts below the Supreme Court and many more.
2. The correct answer is: the 'necessary and proper clause'.
It is a section in the U.S. Constitution that enables Congress to make the laws required for the exercise of its other powers established by the Constitution. This clause is also called the 'elastic clause' because of its broad interpretation.
