UPDATE 2-Trump threatens 20 pct U.S. tariff on EU car imports
June 22, 2018 at 12:28 PM EDT
WASHINGTON, June 22 (Reuters) - President Donald Trump on Friday threatened to escalate a trade war with Europe by imposing a 20 percent tariff on all U.S. imports of European Union-assembled cars, a month after the administration launched an investigation into whether auto imports pose a national security threat.