"We are in close communication with the administration," Humpton told CNBC's Morgan Brennan when asked whether USA Rare Earth was interested in a deal with the Trump administration.Shares of USA Rare Earth jumped in extended trading Thursday, after CEO Barbara Humpton told CNBC that the rare earth miner is "in close communcation" with the White House.USA Rare Earth shares were last up about 6% after hours. Its stock gained 23% in regular trading Thursday and has nearly doubled this year."This is a field whe ...