US Secret Service director admits Trump shooting an ‘operational failure’

The Director of the US Secret Service has told members of Congress that her officers failed in their duty to protect Donald Trump. The Republican Presidential candidate was grazed by a bullet, during a rally in Pennsylvania. Kimberly Cheatle said it was her agency's worst operational failure in decades. Many politicians on the House Oversight Committee want her to resign. Al Jazeera’s Shihab Rattansi reports from the Capitol Hill, Washington.