Yesterday, New York City Mayor Michael Bloomberg’s “Mayors Against Illegal Guns” (MAIG) officially protested H.R. 822, the National Right-to-Carry Reciprocity Act of 2011, requiring all states issuing concealed handgun permits to recognize all other states’ permits.

The mayors’ group, insisting that Congress is overstepping its Constitutional bounds, launched a national campaign to “defend [the] right of states to decide who can carry…”

While there may be a 10th Amendment concern with H.R. 822–another topic too large to include here–the point is how MAIG curiously has become a pro-Tenth Amendment organization.

Let’s proceed to exhibit A.

For years, Bloomberg, MAIG founder and leader, has complained about the need for an “assault weapons” ban. In 2004, he published this statement urging renewal of the 1994 Clinton gun ban.

Bloomberg continues to work with anti-rights politicians like Rep. Charlie Rangel and Senator Chuck Schumer to implement another ban on semi-automatic rifles–shooting one bullet per trigger pull–that share some cosmetic similarities to real military assault rifles shooting multiple bullets per trigger pull.

Bloomberg’s rifle ban would require a federal law, infringing upon states’ rights to decide whether or not their residents can own such rifles. By supporting this, Bloomberg ignores his own alleged support for the 10th Amendment.