LONDON The US Immigration and Customs Enforcement (ICE) agency’s reliance on Microsoft tech surged amid an immigration crackdown, as the data it stored more than tripled, according to a report. Documents obtained by the Guardian newspaper and its partners, +972 Magazine and Local Call, in an exclusive report Tuesday raise questions about whether Microsoft technology is used in an immigration crackdown by ICE, which is accused of using excessive force on a large scale. In July, ICE received a $