John Kerry is way out of line meeting Iranian officials to discuss the Iran Nuclear Deal

Unless he was asked by President Trump to do so, John Kerry is way out of line meeting Iranian officials to discuss the Iran Nuclear Deal. He seems to know that too because he is negotiating in secret. Imagine if all past Secretaries of State were running around trying to manipulate our foreign policy and influencing potential deals, there would be even more chaos than already exists. When it comes to international diplomacy, only the current administration should be in charge. Furthermore, is Kerry motivated by what is best for the United States or by preserving his own legacy? Remember he played a large part in crafting the deal.