China’s share of US imports fell to 7.1% in May, the lowest since 2001, according to trade data published on Thursday by the US Census Bureau. That’s a 4.3 percentage point lower than the same period last year and part of a longer-term decline that began during President Donald Trump’s first term in office.

Vietnam finds itself caught between its two biggest trading partners as the Trump administration tries to stop Chinese exporters using Vietnam as a way station.

An initial trade deal with Vietnam offers a glimpse of how President Trump is pushing countries to cut back on trade with China.