“resulting in roughly $3.6 trillion in tax cuts”
There’s No way they can know these numbers. The Laffer Curve demonstrates there is an optimal rate that will be a benefit which legislators should be seeking.
True. There’s also this little pesky thing, well it should be, that limits what legislators should be spending money on. It’s called the U.S. Constitution. Follow that and Laffer basically becomes meaningless at the federal level.