What exatcly does a senate do? like senator joe biden?

i need to know what exactly a senator like joe biden does as a job, like what does there job succed? do they do a good job? any infor will help thanks.

Public Comments

1. Go to Wikipedia or the US Senate web site to learn more about the job of being a senator. Yes, the job pays well and there are perks built into the job. Senators are responsible for the legislative side of government. Go check Wikipedia for details.
2. Look it up