Lithium Americas stock soared Wednesday as the Trump administration is seeking an equity stake in the mining company, which is based in Vancouver, British Columbia.The White House is seeking an equity stake as Lithium Americas renegotiates the terms of a $2.2 billion loan from the Department of Energy for its Thacker Pass mine, a Trump administration official told CNBC. Reuters first reported the equity stake proposal.Lithium Americas' shares surged about 70% premarket.It is the latest move by the White Hou ...