Chip in your gun?

Massachusetts legislators are considering putting GPS location chips in guns sold in the state, presumably to track their whereabouts.

Instapundit suggests putting the chips in the politicians, instead, since more of them have been shown to be criminals than there have been guns used in crimes.

All a bit silly, of course, and also useless. All states already are quite capable of tracking the whereabouts of the populace via the cellphones most of them carry with them every day.