You can find pending federal bills on congress.gov. You can search by bill number or bill topic.
For example, you can search for bills that contain: immigration
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
Lexis has a neat bill passage prediction feature. If you want to figure out if a bill will pass, you can retrieve it on Lexis and then look at the Legislative Outlook.
Example - H.R.1614 - Destigmatizing in Immigration Act
