An American heiress has dropped a bombshell, possibly precedent-setting $12 billion lawsuit against some of the world’s biggest banks – accusing them of helping her late father loot her $350 million trust fund. Tanya Dick-Stock, the daughter of late Canadian-born Denver real estate mogul John Dick Sr., and her husband Darrin Stock, sued Barclays, HSBC, and multiple trust companies in Colorado District Court on Dec. 5th, claiming the banks unlawfully handed control of her $350 million trust to her father, according to a complaint filed by their lawyer, former US presidential candidate John Edwards. The case reveals how Dick Sr....