There are a number of sources you can use to track immigration legislative developments. One good source that is free and easy to use is congress.gov. You can use it to find both current and archived bills and their bill tracking reports.
You can find federal bills on congress.gov. You can search by bill number or keyword.
Or, you can search for bills by keywords.
For each bill, the site provides a bill tracking report with information about the bill, where it is in the legislative process, etc.
Example: H.R. 1614 - Destigmatizing in Immigration Act
