Question special

With two days left in our discussion I wanted to use our remaining time to focus on where mitochondrial donation will go from here. First, a practical question. What needs to happen for mitochondrial donation to become a legal and accepted medical procedure in the US? Who has control of the regulatory 'lever' that will give the procedure a go-ahead? Will this require a vote in congress to approve new laws, a vote from an appointed Commission such as we saw from the FCC for "net neutrality," or simply a decision handed down by the head of a regulatory agency? Given that the procedure was given approval in the UK, what if any additional evidence do US regulators need to know?