You have to know the history of the bill, the political situation: https://en.wikipedia.org/wiki/Personal_Responsibility_and_Work_Opportunity_Act
Clinton had to contend with Republicans controlling BOTH houses of Congress. He vetoed TWO earlier versions. Fact: Americans overwhelmingly wanted AFDC eliminated. I worked for years as a caseworker and I personally saw its incredible unpopularity. Don't blame Bill for that!
Yes, Gore wasn't perfect, either. You do know who is the greatest popularizer of global warming though, don't you? And I wonder at your wide-eyed support of Sanders: are you aware of his unceasing support of NRA positions? 
NO politician is perfect. Nor any human being. Are you? I'm certainly not.
If we can keep electing Democrat presidents and give them real congressional clout, we can accomplish all we want. In the meantime, throwing away your vote means YOU are part of the problem.
Women's choice. Clean air. Gun control. Fair taxation. 
Meaningless issues, to you?