The Obama administration on Monday hurried to express its opposition to Prime Minister Benjamin Netanyahu’s tentative talk of revoking the permanent residency status of tens of thousands of Arabs living in East Jerusalem. White House spokesman Josh Earnest said that, as far as the US government knows, Israel is not actively considering such a move. But if it were, he said, “it would obviously be of some concern to us.” The US, Earnest went on, reiterates the “importance of all sides avoiding provocative actions and rhetoric.” Netanyahu discussed the idea in vague terms at a Knesset committee meeting earlier Monday,...