How security failures enabled mob to storm US Capitol Updated / Thursday, 7 Jan 2021 19:53 Protesters storm their way into the US Capitol The chaos inside the US Capitol came after the police force that protects the legislative complex was overrun by a mob of Trump supporters in what law enforcement officials called a catastrophic failure to prepare. The siege of the Capitol, home to both the US Senate and the House of Representatives, represents one of the gravest security lapses in recent US history, current and former law enforcement officials said, turning one of the most recognisable symbols of US power into a locus of political violence.