>"That's not looking for a scapegoat; it's looking for a set of root causes "

I wouldn't say they are looking for a scapegoat, it's just political theater and tactical expediency. Furthermore, I'd also say "root causes" is not quite right either. At the end of the day, this is a very partisan committee and I believe they understand the power in getting these big social media companies to crack down on conservative content under the guise of preventing "extreme/radical content".