“The truth is the people I care most about are the middle-income people in this country who have gotten screwed. And if there’s upward revision it’s going to be on high-income people,” President Trump

This is politics. It plays to his base. It puts Democrats in a bind because they represent the richest areas of the country. Democrats have gotten a two-fer free ride for decades by advocating higher taxes on higher income earners and then having the Republicans oppose it on economic grounds.