Minnesota companies were assessing the damage Tuesday of the trade war between the U.S. and its three biggest trading partners, an escalating tit-for-tat that will affect billions of dollars in state imports and exports.

Two of America’s largest retailers, based in Minnesota, are warning prices will increase following President Donald Trump’s new tariffs on imported goods from Mexico, Canada and China.

Ontario Premier Doug Ford threatened to impose a 25% surcharge on or shut off the electricity the province exports to Michigan, New York and Minnesota.