Explained: How security failures enabled Trump mob to storm US Capitol

Lawmakers inside the building blamed a lack of preparation for the historic security breach

The bloody 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.
 
While events such as a presidential inauguration involve detailed security plans by numerous security agencies, far less planning went into protecting the joint session of Congress that convened on Wednesday to ratify the results of the presidential election, the officials said. That lapse came despite glaring warning signs of potential violence by hardline supporters of President Trump, who are inflamed by Trump’s baseless