And McCain voted for it (S. 900) when it passed in the Senate. McCain supported the bill, and helped it to become law.

The Community Reinvestment Act basically requires that any bank that receives FDIC insurance must comply with anti-discrimination guidelines (which means they were no longer allowed to engage in "redlining").

As we can see, S. 900 easily passed in both the House and Senate without any help at all from the Democrats. They knew it was a done deal and S. 900 was going to become law. So they made a deal and agreed to vote for the bill in return for an agreement from the Republicans to help them strengthen the CRA. So, in essence, they voted against S. 900, and for strengthening the CRA. Perhaps the Republicans were looking for a veto-proof majority. Clinton didn't like S. 900 (although he warmed up to it a bit after the agreement was made to strengthen the CRA).