US President Donald Trump welcomed Chinese President Xi Jinping to Washington for a three-day visit where the superpowers' tensions over trade, technology and Tehran will play out against a backdrop of pomp and ceremony ↧ Trump plans grand spectacle for Xi as US says trade truce extended US President Donald Trump welcomed Chinese President Xi Jinping to Washington on Wednesday for a three-day visit where the superpowers' tensions ​over trade, technology and Tehran will play out against a backdrop of pomp and ceremony.