What to know

• Ban comes after Canada imposed retaliatory tariffs on $20bn of US imports hours earlierS1
• WASHINGTON — U.S. President Donald Trump signed new executive orders on Tuesday ramping up retaliation after Canada imposed its latest set of duties on the United States as the trade war between the countries intensified.S2
• The five orders, which will take effect later this month, will completely bar the import of certain Canadian goods, also including motorcycles and some dairy products.S3