People working for it, but not the Secretary, not the Deputy Secretary. There are 80,000 people working for the State Department.
Although I think you will find if you actually look at what people have said, they are saying Israel is like apartheid, not that it is apartheid.
Palestinians living in Gaza and the West Bank are not citizens of Israel. Why is it a crime against humanity for Israel to grant lesser rights to non citizens? Literally every other country does that, too. But the only time anyone calls it apartheid is when it involves Israel.
And it’s never to argue about any specific policy that Israel has toward non-citizens, it’s just to say “Israel is evil and Hamas is justified in targeting Israeli civilians.” Hmmm.