Edgar Maddison Welch, 28, told police he went to Comet Ping Pong to investigate “PizzaGate“, a false online conspiracy theory involving Hillary Clinton.
Passengers said the landing was prompted by severe turbulence over the Atlantic.
Maryland wants to become the first state to require fingerprint-based background checks for ride-hailing drivers.
Track inspectors appear to have fabricated inspection reports month after month, the safety agency said.
In addition, transcripts of interviews between Metro management and track inspectors suggests investigators believe inspectors may have been fabricating inspection reports