Occasionaly there are "roll call" votes where each member's vote are recorded.
Experts give testimony to Congress to help make decisions on laws and policy through congressional hearings.
Once a bill becomes a law, it is published in its final form.
When a bill becomes a law, a history of the process it went through is created.
Thousands of bills are introduced to Congress every year. Since the mid-1990's we can now track every introduced bill, not just those that become law.