President Donald Trump told U.S. steelworkers on Friday that he will double tariffs on steel imports to 50 percent. Reuters White House correspondent Jef Mason discusses. For more context and news coverage of the most important stories of our day click here: https://www.msnbc.com/ » Subscribe to MSNBC: https://www.youtube.com/msnbc » Subscribe to MSNBC on TikTok https://www.tiktok.com/@msnbc…