This is not a complete list of every website that exists for social workers. That would be far too many to list. This is a starting point if you don't know where to start. As with any information you find, assess it for bias and citations for big claims. These websites are not managed by the library, if a link is broken it could be that the name of the organization has changed. Alert the librarian. For many policy research assignments you will have to go to individual state websites and search on your own.
These are often referred to by students especially for policy information: