On the negative side, there were no real fixes for the conditions that caused the great recession. Unproductive unsustainable growth of paper wealth still continues like before. The few things that were passed under Obama in this regard were minor and (and even those were later watered down). This is a far cry from FDR who fundamentally changed the economy after the great depression.
On the positive side, Obama's economic recovery did not rely on a bubble and was fundamentally solid, so solid in fact that its still going. This is unlike Clinton and W, whose good economies were mainly bubbles.
So, a B?
Despite the economic nationalism though I think Trump is backing off on it so he can win reelection. Basically the only change Trump really did was to grow the deficit and worsen environmental quality by giving lavish gifts to his supporters.
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