Trump assassination attempt probe: Secret service chief testifies on capitol hill

The moment then-Republican candidate Donald Trump was shot at during a campaign rally in July, has been described as one of the most significant failures of the US secret service. Trump was hit in the ear by a bullet - a few inches away from death. Now, a list of what's being called 'avoidable mistakes' is being highlighted on Capitol Hill - just ahead of a final report expected in the coming days.