I shouldn't gloat, nor should I be happy about a failing economy, but everyone that says, " Trump knows what he is doing" has a hopelessly wrong understanding of economic facilitators. As a leader, Trump's influence on the economy is reflective of his influence on politics. Just as he fails to repeal and replace, he fails to maintain economic prosperity.
MSNBC discusses how Trump provides economic prosperity well, but I would like to expand. The stock market is filled with Republican whales that are addicted to large tax breaks and hefty representation. Their tax breaks are sold as "Trickle-Down Economics" which fails on a handful of levels. Rather than money flowing from super rich to lower classes, it circulates mostly from super rich to other super rich and maybe to upper middle class and also lower upper class. As these groups continue to shrink, these are less likely to receive circulation.
After Trump's victory, the super rich felt they had a representative in the White House to expand their financial powers. This may appear to #MakeAmericaGreatAgain, but it is a thin line of greatness. Any systemic risk would pop this bubble; prior to North Korean escalation, this risk came from healthcare. Republicans started investing in the growing life insurance bubble in attempts to profit from a repeal and spike in private insurance markets. North Korea gave the systemic shock that sunk all the markets as we saw the day after Trump said "Fire and Fury" to North Korea.