Article VI of the Constitution
... This Constitution, and the Laws of the United States which shall be made in Pursuance thereof; and all Treaties made, or which shall be made, under the Law of the Land; and the Judges in every State shall be bound thereby, any Thing in the Constitution or Laws of any State the Contrary notwithstanding.
2nd Ammendment, Ammendments to the Constitution of the United States: ...shall not be infringed.
Basically, he can't and this is not a way around the 2nd Ammendment. It's BS.