https://www.theregister.co.uk/2019/09/16/antitrust_probe_facebook_amazon_apple_google/

The US House of Representatives Judiciary Committee has written to the big four tech giants – Facebook, Amazon, Apple and Google – demanding comprehensive information on its financial structures and 10 years' worth of emails between top executives.

The bi-partisan committee is harvesting the data as part of its investigation into competition in the tech sector, prior to holding hearings and roundtables.