The Globe and Mail reports in its Friday edition that the Trump administration has made adjustments to the tariffs it had issued on foreign steel, aluminum and copper, aiming to strengthen and simplify a system that some U.S. businesses have complained is too onerous. A New York Times dispatch to The Globe says the administration is also imposing a 100-per-cent tariff on some imported medicines if their makers refused the President's demands to build U.S. factories and lower prices. The changes, made by presidential decree, affect two industries -- pharmaceuticals and steel -- that his administration has been particularly responsive to. They come as the administration works to complete a vast and complex new system of tariffs and respond to concerns from consumers and a mix of businesses that have been helped or hurt by the levies. Makers of U.S. steel and aluminum have been strong supporters of Mr. Trump's tariffs on foreign metal, levies the President doubled to 50 per cent last year. But companies that import products containing steel and aluminum -- which range from washing machines to golf clubs -- have complained that the way the administration imposed tariffs on those products was burdensome and confusing.