By David Shepardson and Diane Bartz WASHINGTON (Reuters) -Big tech has launched a media blitz aimed at derailing one of the most ground-breaking bipartisan bills in the U.S. that would bar tech companies, like Amazon.com Inc, from giving preference to their own businesses on their websites. Amazon lambasted the bill on Wednesday saying in a blog post https://www.aboutamazon.com/news/policy-news-views/antitrust-legislation-and-the-unintended-negative-consequences-for-american-consumers-and-small-businesses that the bill “jeopardizes two of the things American consumers love most about Amazon: t…