Please consider The Fed Shouldn't Enable Donald Trump by William Dudley.

U.S. President Donald Trump's trade war with China keeps undermining the confidence of businesses and consumers, worsening the economic outlook. This manufactured disaster-in-the-making presents the Federal Reserve with a dilemma: Should it mitigate the damage by providing offsetting stimulus, or refuse to play along?

If the ultimate goal is a healthy economy, the Fed should seriously consider the latter approach.

Fed Chairman Jerome Powell has hinted that he is aware of the problem. At the central bank's annual conference in Jackson Hole last week, he noted that monetary policy cannot "provide a settled rulebook for international trade." I see this as a veiled reference to the trade war, and a warning that the Fed's tools are not well suited to mitigate the damage.