Because according to Senator Feinstein, it's LEGAL TO DO SO.
You know, I'd read that she said, "…it’s legal to hunt humans with 15-round, 30-round, even 150-round magazines" a couple of days ago, but didn't post about it because I decided to give her the benefit of the doubt and assume she simply misspoke.
But as this video demonstrates, she's READING FROM PREPARED NOTES OMG.