A U.S. judge ‌on Friday ordered ​the ​Justice Department to ⁠justify ​its decision ​to drop criminal charges against ​Indian ​billionaire Gautam Adani, ‌declining ⁠to rule immediately on Adani's ​lawyers' ​request ⁠earlier in ​the week ​to ⁠formally dismiss the ⁠case.