Democratic Senator Elizabeth Warren, who is in the race for the 2020 nomination for U.S. President, is set to present a regulatory plan aimed at breaking up some of America's largest technology companies, including Amazon.com Inc, Alphabet Inc and Facebook Inc, she wrote in a blog https://medium.com/@teamwarren/heres-how-we-can-break-up-big-tech-9ad9e0da324c post on Friday.