President Donald Trump is defending his plan to raise taxes on steel and aluminum imports entering the United States. Trump declared on Friday that “trade wars are good, and easy to win” -- a claim that some Americans were quick to criticize. The critics include members of his own Republican Party. Trump has said that the U.S. government would set punishing tariffs on steel and aluminum imports. Such a move would increase tensions with China and other countries. They also would raise the possibility of higher prices for American businesses and consumers. Early Friday, Trump took to the Twitter social networking service to defend himself.