premise: He came to care about the Senate, but he has deep concerns about its viability in its present form, concerns which he expressed in a very fine speech in February of 1998. He challenged all of us to work together constructively for change, both constitutional change and internal change.
hypothesis: he wanted us to work together for a better future
reason: this statement is correct because the text says he wanted change and i think the system had trouble with this because I used the word future