In the past I've stated that the President gets too much credit for a bad economy, and too much blame for a good economy.
Completely agree. The economy is so dependent upon different sectors that to attribute total success or total failure to one individual (POTUS) is overstating their power. Its true that presidents can effect the economy by implementing good or bad policies, but to the extent that they cause boom or bust cycles is lacking.
For instance, the recent tariff war with China and other countries certainly has a negative impact on the world economy, but booms and busts are definitely going to happen regardless. Just about any economist will agree that it is an inevitable reality.
"Reason obeys itself; and ignorance submits to whatever is dictated to it" -- Thomas Paine