Trade talks with China remain a wild card that can stave off an economic slowdown in 2019, or, if things go south in trade negotiations, take the economy of both countries down with it.
There are some fairly unusual things about the economy in the Trump Era, that are reminiscent, albeit opposite, of the Carter Era.
As bad as Obama's eight year tenure may have been, the well meaning incompetence, naive mismanagement, and embarrassing diplomacy of his presidency pales next to the rolling dumpster fire of Donald Trump's moral turpitude, naked crony corporatism, and manifest legal malfeasance.
With China instituting 25% tariffs on over one hundred American made products, a trade war with China is no longer a mere hypothetical, and with Donald Trump being who he is, he is practically guaranteed to retaliate "ten times harder" (basically another way of saying he'll grossly overreact to this threat to his manhood).
With the election upcoming, we've no choice but to wait and see if the bubble economy bursts before or after the election.