India, May 8 -- The US Justice Department is doubling down on its attempt to break up Google by asking a federal judge to force the company to part with some of the technology powering the company's digital ad network. The proposed dismantling coincides with an ongoing federal effort to separate Google's Chrome browser from its dominant search engine. The government's latest proposal was filed late Monday in a Virginia federal court two-and-half weeks after a federal judge ruled that its lucrative digital ad network has been improperly abusing its market power to stifle competition to the detriment of online publishers. In a 17-page filing, Justice Department lawyers argued that US district judge Leonie Brinkema should punish Google by orde...