Go to https://www.federalregister.gov/
This is the Federal Register, the published official announcements of the United States government. It includes official notices, rules, proposed rules, executive orders, funding announcements and other official announcements. Explore the site on your own and try to get a sense of how broad and detailed some of the activities of the US government are. You should be able to find many announcements on a broad range of topics, both current and/or recent.
