Josh Gerstein puts today's hearings in context:

In the last five years, House and Senate committees have held at least 22 hearings focusing on the problem of radicalized American Muslims plotting terrorist acts or joining Al-Qaeda and similar groups, according to congressional staffers. 

Weigel adds:

The point is that the controversy over the hearings is mostly about King, who commands media attention like some lost member of the Kardashian family ...