golda, a technology reporter with axios, joining us on the phone to talk about this hearing that will be taking place at noon eastern time on c-span3, on our website c-span.org, and you can listen on the go with our free c-span radio app. committee iswhat holding this hearing and why? is the house judiciary committee antitrust subcommittee. they are holding this hearing because they have been having an investigation of the digital markets and big tech companies in the past few years and this is a culmination of that investigation. host: why are they investigating these companies? guest: they are investigating these big tech companies, apple, amazon, google, and facebook, because amongst the democrats and some republicans, these -- there is a feeling that these companies are too big, take up too much of the economy, gobble up competition by acquiring smaller companies, and amazon's case by both selling products and being a platform, and in apple's case running the app store. they feel that antitrust law has not kept up with what the digital economy looks like. senator elizabeth warren