MISSY BEATTIE—Leading economists decry the tax bill. Trickle down sounds promising, like a piñata spilling opportunities to workers. History proves otherwise. The goodie bag explodes upward, back into the accounts of CEOs and shareholders, many of whom live in other countries. The bill will create a massive deficit—a deficit used to cut social spending as required in the Pay-As-You-Go Act of 2010. Billions cut from Medicare and other federal programs.