WASHINGTON — U.S. President Donald Trump welcomed Chinese President Xi Jinping to the White House on Thursday for a lavish state summit expected to be heavy on symbolism but light on substance, with both leaders keen to showcase stable ties despite a host of thorny issues such as AI, trade, Taiwan and the war with Iran. In remarks on Thursday from the grand foyer of the White House, Trump touted his "truly great friendship" with Xi and said the two powers had made strides on trade since his trip to China in May. "During this visit, we will also discuss pressing issues concerning security, technology, and 'super intelligence,'" Trump said, using his alternative name for artificial intelligence. "The decisions we make in these areas today can promote peace and prosperity for decades and decades to come." Speaking after Trump, Xi said the competition between the U.S. and China should be a "healthy one." U.S. companies were welcome in China, he said, adding that he hopes "Chinese companies are treated fairly here in the United States." Xi also said both militaries should maintain regular d