United States shipbuilding is at risk under President Trump’s tariffs on Canadian steel and aluminum, according to Sen. Tim Kaine (D-VA), who is leading a bipartisan push in the Senate to end a 25% tariff levied on the majority of Canadian goods. Kaine, whose state is home to HII’s Newport News Shipbuilding, today argued that these tariffs on aluminum and steel will drive up material costs for the Navy’s high-priority warships and submarines at a time when industry is already...