The economy has been booming for a long time and outside of the stock market which can be explained by stock buybacks, most economic metrics have been pretty consistent for a while. We were at full employment before Trump was in office.
It will be a couple of years before we see the real effects of the tax cuts so giving them any credit right now for their effect on the economy is pretty asinine. It's not like an economy will just explode a couple of month after a tax cut.
GDP growth was sputtering at the tail end of Obama's tenure. It rapidly and radically reversed. Even the latest wage growth statistics were much better than expected. Labor participating hasn't changed, but unemployment has improved. Wall street is definitely doing better than Main Street, but don't waste my time trying to argue that Main Street hasn't improved, too.
It's a temporary weight cut. All of the corporations were adapted to an environment with a 35% tax now have a 21% tax (not to mention the 1-time repatriation tax). Of course that is going to broaden investment, incomes, profits, and cash reserves which can be leveraged, but it's a temporary effect similar to a fighter dropping a weight class for the first 1-2 fights before his body adapts to the lower class, and he no longer seems like a monster compared to everyone else. It's what you do with that growth going forward, and Trump has a spending strategy that is going to swell our debt to WWII proportions, but unlike FDR, or China with their Belt & Road initiative, he isn't massively overhauling our nation's infrastructure, our employment in support of that effort like the CCC, public health spending, social security, or the GI Bill that improved security/patriotism in the simultaneous moment it made education more accessible to the masses.
I see the value of a wall on our southern border, unlike many, but when I look at the estimates required to build it correctly, which is closer to $400bn-$600bn, not the paltry $30bn house of cards he is trying to built, and then I look at how China is spending $1tn on expanding infrastructure (including in many countries that aren't their own) as a simple investment with the aim of anchoring itself as the hub of all future economic trade between Asia, Europe, Africa, and the Oceanic, I think....well, why can't we do something more like that? Why can't we do something to build up our infrastructure and the generation of jobs south of our border more robustly so that they don't all want to come up here, where they just work crappy jobs and send half of their cash home anyway, when if we built half their stuff it would give us the leverage to dictate how their economies and governments are organized with them glad for the exchange?
The Canadians would help us. The Mexicans are desperate to be part of this team effort. There's all sorts of ways to do this with a more robust free-market approach, but it will require deep government spending. Does a wall not burden taxpayers, too? It's a matter of trade-off in strategy, and frankly, Democrat or Republican, I don't really see a comprehensive approach.