(Reuters) -The stock market plunge has more to do with the emergence this year of China's DeepSeek artificial intelligence tool than with President Donald Trump's policies, U.S. Treasury Secretary Scott Bessent said in an interview released on Friday that signaled little concern about the ongoing nosedive. "For everyone who thinks these market declines are all based on the President's economic policies, I can tell you that this market decline started with the Chinese AI announcement of DeepSe...