Saturday's shooting near the White House has raised security concerns ahead of summer celebrations to mark America's 250th birthday. The shooter, who was killed after opening fire on a Secret Service checkpoint, had previously blocked a White House entry lane last June, court records show. Nicole Sganga reports.

Original source: https://www.cbsnews.com/video/shooting-near-white-house-raises-security-concerns-ahead-of-americas-250th-birthday-celebrations/