You end up gnashing your teeth a lot when you hear the kinds of ignorant nonsense about the economy that is par for the course in the media. This theory is supposed to be that you give benefits to the rich, in hopes that the money will trickle down to the poor. The only problem is that there is simply no such theory and never has been. As someone who spent the first decade of his professional career researching the history of economic theories and writing about them in scholarly journals, I can assure you that no recognized economist in any part of the spectrum has ever had any such theory. But tax cuts to encourage investment are not intended to let anything trickle down.
Nothing trickles down to the working class.
It is the workers who first get the money and only later do the investors find out whether they have made money or lost money. There are no capital gains to tax until afterwards. Misconceptions of international trade are the norm in the media. Adam Smith knew better than that two centuries ago. To listen to those who panic over international trade, you would think that the whole purpose of it was to get rid of as much of what we have produced as possible and to get as little as possible of what other countries have produced in return.