A group backed by wealthy individuals, including Google co-founder Sergey Brin, has made a significant financial contribution. They gave $5 million to a group that opposes Proposition 40.

This donation is part of the ongoing debate over a proposed tax in California. The tax is often referred to as the billionaire tax.

Further details about the proposed tax and the opposition to it can be found Times. The $5 million donation is a notable development in this discussion, but more information is available from the source for those looking to learn more.