Conversation so far:
What were Joe Lieberman's political positions?
Genuinely an Independent.
What issues are important to Joe Lieberman?
On domestic issues, Joe Lieberman strongly supports free trade economics while reliably voting for pro-trade union legislation.
What else does Joe Lieberman support?
Joe Lieberman is a supporter of abortion rights and of the rights of gays and lesbians to adopt children.

Question: Does he support any more causes?
Self-contained rewrite: Does Joe Lieberman support any more causes?