By Saeed Azhar, Kanchana Chakravarty and Sukriti Gupta NEW YORK (Reuters) - Wall Street's main indexes were mixed on Monday after President Donald Trump said he plans to double tariffs on imported steel and aluminum,

The European Union said it is preparing “countermeasures” against the U.S. following President Donald Trump’s unexpected announcement that he would increase his tariffs on steel. EU Commission President Ursula von der Leyen and Trump last week agreed to “rapidly” begin on a trade deal.

Mary Barra said at the Wall Street Journal’s Future of Everything conference in New York City she learned lessons from previous talks with Trump.

Pantry staples are in line for a hit from President Trump’s tariffs. Soup and snack giant Campbell’s said that it is navigating tariffs on three fronts: retaliatory tariffs on soup it ships to Canada,

The U.S. dollar fell against other major currencies on Monday, giving up some of the previous week's gains, as markets weighed the outlook for President Donald Trump's tariff policy and its potential to constrict growth and unleash inflation.

President Trump would invoke other tariff authorities if his appeal of a trade court's ruling isn't successful, Commerce Secretary Lutnick said.