In what proved to be the first of several years of scandals over the use of personal data in illegal, anti-democratic campaigning, in 2015 the Guardian discovered that Ted Cruz's campaign for the US presidency paid at least $750,000 that year to use tens of millions of profiles of Facebook users gathered without their permission by Cambridge Analytica, owned by London-based Strategic Communications Laboratories. Financially supported by leading Republican donor Robert Mercer, CA amassed theseā¦