General Services Administration head Martha Johnson has resigned along with two of her deputies, reportedly over an impending inspector general’s report detailing lavish spending on a Vegas conference for a handful of government employees:Organizers spent $835,000 on the event, which was attended by 300 employees. The expenses included $147,000 in airfare and lodging at the hotel for six planning trips by a team of organizers. Among the other expenses were $3,200 for a mind reader; $6,300 on commemorative coin set displayed in velvet boxes and $75,000 on a training exercise to build a bicycle.“When the White House was informed of...