 Complete the following phrase:  Trudeau had a much frostier relationship with Obamas successor, Donald Trump. The Trump administration forced the renegotiation of NAFTA to create the CUSMA known as USMCA in the US, in which Canada made significant concessions in allowing increased imports of American milk, weakening Canadas dairy supply management system. Trump also implemented tariffs on Canadian steel and aluminum, to which Trudeau retaliated by imposing tariffs on American steel, aluminum and a variety of other American products. At the 