SpaceX CEO Elon Musk likely won't receive top security clearances — even though roughly 400 staffers at his rocket company already have those permissions. As the Wall Street Journal reports, SpaceX lawyers advised executives not to attempt to secure higher security clearances for the mercurial CEO since that would force him to disclose information about his frequent contacts with foreign nationals, including Russian president Vladimir Putin, as well as his well-documented drug use. Musk currently holds a "top secret" security clearance, giving him access to "some national security secrets" but not the full clearance required by staff who work on […]