President Donald Trump's top advisers arrive in Beijing this week for talks on how to avoid a trade war between the world's two biggest economies. The United States and China have threatened recently to impose steep tariffs on tens of billions of dollars of each other's goods. The US team, which includes Treasury Secretary Steven Mnuchin and US Trade Representative Robert Lighthizer, hopes to make enough progress in the negotiations on Thursday and Friday to dial down the tensions. "I think we've got a very good chance of making a deal," Trump said last week when he announced the visit. Not everyone agrees with him.