My suggestion for addressing this:
1) Thank David Gregory for proving that a law banning high-capacity magazines is completely ineffective.
2) Prosecute him with extreme prejudice.
3) Acquit him and strike down the DC magazine ban as unconstitutional.
By the way, here’s another petition you should know about:
“Actually take these petitions seriously instead of just using them as an excuse to pretend you are listening”
The official response is “We’re listening. Seriously.”