A coalition of 34 business groups warned the Trump administration Monday that keeping in place its steel and aluminum tariffs against Canada and Mexico could imperil passage of the U.S.-Mexico-Canada Agreement on trade.

“[T]he continuation of these tariffs with respect to Mexico and Canada will create impediments to Congressional passage of the USMCA implementing bill given concerns expressed by members of Congress about the use of these tariffs with respect to our two closest allies,” the business groups said in a letter to U.S. Trade Representative Robert Lighthizer. “The business community supports the removal of this potential impediment to Congressional approval of the USMCA.”