The power to tax is an expressed power of Congress and the power to declare laws unconstitutional is not.
Article I, Section 8 of the Constitution is a list of Congress' powers. The first sentence of the first paragraph begins: "The Congress shall have Power To lay and collect Taxes, Duties, Inposts and Excises, . . ."
The Constitution does not address the issue of declaring laws unconstitutional at all. The Supreme Court decided that judges in the federal courts had the authority to determine whether federal laws were allowable under the Constitution in 1804 in the case of Marbury vs. Madison, when they decided a law had no force or effect because it was not proper under the Constitution.
Congress cannot declare laws unconstitutional. The Judiciary Branch may declare a law unconstitutional only if it conflicts with some provision of the State or Federal Constitution. The Supreme Court can rule a law to be unconstitutional, but Congress, along with the States, can only amend the Constitution.
enumerated power :)
no
The Supreme Court has the authority to interpret the Constitution.
Congress can declare war (senate) and ratify treaties.
they can declare laws unconstitutional
Andrew Jackson
The powers that are exclusively held by congress include ability to change taxes, impeach the president and declare war. These powers are expressed by the constitution.
Supreme Court to declare acts of Congress and state laws unconstitutional
Supreme Court to declare acts of Congress and state laws unconstitutional
Can declare laws unconstitutional
courts may declare acts of congress to be unconstitutional