What We Know About the Gunman in DC Gala Attack

Summary

Bloomberg's Laura Davison reports on the suspect who stormed the White House Correspondents' Dinner. The attacker, from California, traveled by train and checked into the hotel a day before. His motives are unclear but a manifesto suggests he targeted President Trump. The incident raises questions about security protocols for political events.

• The attacker, Cole Tomas Allen, traveled from California to Washington by train.
• He checked into the Washington Hilton a day before the event.
• He bypassed a checkpoint and was detained by Secret Service.
• A manifesto seen by Bloomberg called Trump a traitor.
• The suspect is expected to be arraigned on Monday.
• This is part of a series of security breaches around the president.
• The incident has prompted reviews by the Secret Service and other authorities.
• Trump has used the incident to advocate for building a new ballroom at the White House.