Administrations do not "amend" the Constitution.
"The Congress, whenever two thirds of both Houses shall deem it necessary, shall propose Amendments to this Constitution, or, on the Application of the Legislatures of two thirds of the several States, shall call a Convention for proposing Amendments, which, in either Case, shall be valid to all Intents and Purposes, as part of this Constitution, when ratified by the Legislatures of three fourths of the several States, or by Conventions in three fourths thereof, as the one or the other Mode of Ratification may be proposed by the Congress; Provided that no Amendment which may be made prior to the Year One thousand eight hundred and eight shall in any Manner affect the first and fourth Clauses in the Ninth Section of the first Article; and that no State, without its Consent, shall be deprived of its equal Suffrage in the Senate."

And this is the most recent amendment!
"Amendment 27 - Limiting Congressional Pay Increases

No law, varying the compensation for the services of the Senators and Representatives, shall take effect, until an election of Representatives shall have intervened.

Notes for this amendment:
Proposed 9/25/1789
Ratified 5/7/1992
History
Article 1, Section 6 "


Quote Originally Posted by leo9 View Post
I am only an ignorant foreigner, but I had the impression that one or two previous Administrations had amended the Constitution without being judged as subversives. Wasn't there someone who wanted to put in an amendment about gay marriage? Or was that another lie by the liberal media?