This actually makes perfect sense when you think about it. Obama doesn't take seriously the threats from external forces like Russia or Iran, having shown himself more than capable of simply dismissing any danger because that's a better fit for his ideology than to admit the threat and take responsibility for actually doing something about it.
So why wouldn't he do the same thing when it comes to threats inside the country from our own citizens? It's one thing if they're those scary right-wing militia types who make those disturbing anti-government remarks on talk radio. We can't have that. But drug traffickers with multiple felony convictions? Especially the ones we've already got in federal prison?