Trump's message will put pressure on America's trading partners, many of whom are still trying to negotiate fair trade terms. His top economic adviser, Kevin Hassett, said on Sunday that the current offers made by other countries are not enough.

The European Union said on Sunday it would extend its suspension of countermeasures to U.S. tariffs until early August and continue to press for a negotiated settlement as U.S. President Donald Trump's administration demanded more concessions from trading partners.