Trump again taps tech billionaire Jared Isaacman to lead NASA after previously pulling nomination

By Alejandra Jaramillo, Kristen Holmes, CNN (CNN) — President Donald Trump is nominating tech billionaire Jared Isaacman for a second time to serve as administrator of NASA, he announced on social media Tuesday. Isaacman, an Elon Musk associate who has twice traveled to space on private SpaceX missions, was tapped for the position earlier this