>I’m not sure why that is and I don’t want to start a political debate
I'm late to the party and am willing. It's becsuse we cut taxes a lot during GOP terms but no one has the balls to raise taxes back up. Thars pretty much the one bit of respect I have for HW Bush despite it being the nail in the coffin for re-election. But for the most part, GOP appeals to business, and the easiest talking point is to make them pay less taxes (though this line has blurred since Citizen's United).
That's really the gist of it. Politicians (on both sides of the aisle) need to know when to raise taxes in good times and not coast on the benefits. That way tax cuts can happen as relief in harder times. Instead we're headed to hard times and nearing default levels in the US debt. In other words: we're cooked.