Is the Fed currently pursuing an expansionary, neutral, or contractionary monetary policy?

Is the Fed currently pursuing an expansionary, neutral, or contractionary monetary policy?.

Is the Fed currently pursuing an expansionary, neutral, or contractionary monetary policy? What if any difficulties do you think may be encountered in implementing the current policy being pursued by Fed Chai Janet Yellen (who succeeded Ben Bernanke in Feb 2014) to cope with one of the worst financial crises in the US since the Great depression?