Google cofounder seeds billionaire political effort amid wealth tax debate

Sergey Brin, a Google cofounder and one of the wealthiest people in the world, is donating $20 million to a new California political drive weeks after he took steps to leave the state to avoid a possible billionaire tax.

It is Brin’s largest and most visible political move ever, and it is the primary contribution to seed a $35 million effort by billionaires to fund ballot measure campaigns in California, according to a disclosure obtained by The New York Times on Wednesday.