U.S. President-elect Donald Trump does not intend to spare crude oil from his planned 25% import tariffs on Canada and Mexico, sources told Reuters on Tuesday, as the oil industry warned the policy could hurt consumers, industry and national security. Canada and Mexico are the top sources of U.S. crude oil imports, together accounting for around a quarter of the oil U.S. refiners process into fuels like gasoline and heating oil, according to the U.S. Department of Energy.