If, in this real world of ours, Americans in 2020 will import $649 billion of goods and services from the Chinese, economists expect

1. that, if the Chinese trade fairly, Americans will in 2020 export about $649 billion of goods and services to the Chinese
2. that, regardless of how fairly or unfairly the Chinese trade, Americans will export in 2020 exactly $649 billion of goods and services to the Chinese
3. no particular relationship between the value of American imports from the Chinese and the value of American exports to the Chinese.
4. Nothing.The answer is purely in the realm of politics, not economics