First, as to the US right to question - Israel receives $3B a year from the US as well as the protection of the US veto in the UNSC. Without this support, would Israel have survived over the past sixty years? As to the "clarification" - the Israeli reasons for the killings of the three Palestinians are clearly bogus as they were unarmed and offered no resistance. If this was not extra-judicial murder, as it appears to be, the US needs clarity if it is called upon to defend Israel's actions.
Supreme Court rejects plea for freeze on expansion of asylum seekers' detention (Haaretz)