The stock market is reacting to President Trump’s announcement that he will impose a 25% tariff on all imported vehicles and foreign-made auto parts. Meanwhile, major law firms are suing the Trump administration over executive orders targeting them. Plus, Toronto Mayor Olivia Chow joins Morning Joe to discuss how her city is pushing back against President Trump's trade war. For more context and news coverage of the most important stories of our day click here: https://www.msnbc.com/ » Subscribe