Chinese tariffs as high as 15% on a range of US agricultural goods take effect Monday, potentially exacerbating a trade dispute between the world’s two largest economies.

China is imposing new retaliatory tariffs on certain United States agricultural goods Monday. President Donald Trump says his trade policies will make the U.S. richer in the end, but his administration is starting to acknowledge the potential for some short-term pain for Americans.

China has announced retaliatory tariffs on some Canadian farm and food imports, after Canada imposed duties in October on Chinese-made electric vehicles and steel and aluminum products