Zero Fail review: US Secret Service as presidential protectors – and drunken frat boys

Pulitzer-winner Carol Leonnig anatomises an agency that has never truly lived up to its steely professional image

At times, the US Secret Service has resembled a bunch of pistol-toting frat boys on a taxpayer-funded spring break. In the words of a drunken supervisor speaking to his men in the run-up to a 2012 summit in Cartagena, Colombia: You don't know how lucky you are ... You are going to fuck your way across the globe."

Related: Trump family members got inappropriately close' to Secret Service agents, book claims