Auto-industry representatives are expected to argue during a U.S. Commerce Department hearing Thursday that President Donald Trump’s proposed tariffs on auto imports would costs jobs and increase car prices.
The White House in May asked the Commerce Department to investigate whether it could use a national-security law to impose tariffs of up to 25% on imported vehicles and car parts. Mr. Trump has argued trade barriers are needed to pressure manufacturers to build more goods in the U.S. and expand factory jobs. He has also...