The chief executive of Volvo Cars urged the European Union to cut its 10% tariff on American-made cars, arguing that European automakers do not need protection from U.S. competitors, in an interview with Reuters on Thursday.

The EU says the U.S. is resisting efforts to strike a trade deal and warned of countermeasures if no agreement is reached with U.S. by Aug. 1.

President Donald Trump expanded his tariff threats over the weekend, calling for 30% levies on two of America’s largest trading partners: the European Union and Mexico.