Yesterday it was Eli Broad, the Los Angeles billionaire, who turned against Betsy DeVos.

Today, it is Arthur Rock, a Silicon Valley billionaire who is one of the biggest supporters of Teach for America.

They are troubled by DeVos, maybe because she is a religious zealot, maybe because vouchers might force them to compete, maybe because her brand of reform taints theirs.

Whatever it is, the reformers are embarrassed to find that they are in the same camp with Trump, whose name is anathema in California.

But, hey, Arne Duncan, Bill Gates, Eli Broad, Arthur Rock, and the Walton family paved the way for DeVos with their advocacy of school choice. She is just taking it to the next step.