The TV News Archive, a sub-collection of the Internet Archive, is a free searchable database of streaming television news content from 1,847,000 shows since 2009. You can text search close captions and share custom clips from nearly every major national and international network including CNN and BBC. You can also search by quotes or political ads, and special collections have been curated within the resource such as the Trump Archive which collects TV news shows containing debates, speeches, rallies, and other broadcasts related to Donald Trump or Fact Checked with news clips that have been recently fact checked by organizations such as FactCheck.org or PoltiFact. Due to copyright restrictions you can stream content only, but can borrow a DVD of a show and have it shipped to you for a fee. Downsides to this resource include inconsistent metadata and connectivity issues that can slow down loading and searches.
Chronicling America is a free digital newspaper database from the Library of Congress that grew out of their National Digital Newspaper Program. This resource includes historic newspaper pages from 1789-1963 (even though the majority of content is pre-1923 due to copyright restrictions). All pages are full-text searchable, and you can search within a particular state or newspaper. The interface has a variety of advanced search features and highlights exactly where your keywords are in the text, allowing you to easily zoom in and out while exploring content. You can grab persistent links to pages or save as PDF or image files. Trying to track down US newspaper titles that have not been digitized? Click on the US Newspaper Directory which is linked on the Chronicling America home page. There you will find an alphabetical list of newspaper titles from 1690-present and which libraries or historical societies have access to particular years via microfilm.