Economists predict that the Trump administration’s trade policies could push up prices for consumers, making it harder for Fed officials to cut rates.

Outside of a U.S. President bending norms, the Fed also faces challenges in achieving its economic objectives. Inflation remains above its 2% target: Its preferred measure is at 2.4%, though core prices — considered a better gauge of where inflation is headed — rose 2.8% in November from a year ago.

Bank of Canada governor Tiff Macklem said that there is not much central bankers can do to offset the economic consequences of a trade war with the U.S.