Pressuring Congress as its September vote approaches, President Obama says it is pure folly to think a better nuclear agreement with Iran can be negotiated. He is absolutely right. This deal is the best we can do—unless a new team is fielded to renegotiate. We had tremendous leverage going into the negotiations due to tough sanctions bleeding Iran’s economy dry. However, in this high-stakes poker game, Obama and Secretary of State John Kerry naively revealed their hand. All leverage was lost once the Iranians sensed how desperately a deal was wanted. If Congress were to mandate new negotiations, a new U.S. team would need relieve Tehran of perceptions that gave its negotiators an upper hand. Renegotiation success would turn on two factors: (1) Bringing in a hard-nosed lead negotiator and (2) Cutting off the monthly $700 million lifeline payment Tehran receives from Obama to keep negotiations going—payments now totaling over