How will US and Indonesia's tax cut affect inequality?

On Dec 2, US Senate passed a tax bill changing statutory corporate tax rate (CTR) from 35 to 20 percent, The Jakarta Post writes asking if the tax cut will affect growth: " [...] there is little evidence that corporate tax cut boosts economic activity unless implemented during recession, when they lead to significant increases in employment and income, according to economists Alexander Ljungqvist (NYU and affiliated to IFN) and Michael Smolyansky in a 2016 paper."