Rationalizing Stock-Market Irrationality

 | Mar 22, 2017 03:41PM ET

The repeal-and-replace health care bill needs a “Yes” vote from the House of Representatives on Thursday, March 23. With it, the financial markets may move higher on the belief that Trump/Congress will be able to pass corporate-friendly legislation from tax overhaul to regulatory reform. Without it, risk assets may stumble on the fear that political leaders will be unable to provide ambitious stimulus measures down the road.

The prospect of lower taxes has always been at the heart of the “Trump rally” since early November. To a lesser extent, the notion that the incoming president would support a $1 trillion package for roads, bridges and infrastructure projects also stoked stock buying flames. With infrastructure spending not showing up in the executive branch’s budget, however, more weight has fallen on the shoulders of tax rate reductions.

Let’s assume that the health bill gets back on track. Are prospective changes to the corporate-tax code all they’re cracked up to be?