Tesla CEO Elon Musk escalated a public feud with Trump trade advisor Peter Navarro, according to CNBC. Musk harshly criticized Navarro in response to his claim that Tesla only assembles cars, using a series of personal insults to dismiss his credibility. White House Press Secretary Karoline Leavitt dismissed the insults. Tesla stock is down 22 in four sessions and 45 for the year, shedding over half a trillion in value.