Here's what business leaders are watching, according to a PWC survey

PWC has released their latest pulse survey which they detail the biggest risks to businesses under a Biden or Trump presidency as well as what business leaders are keeping their eye on now. Tim Ryan, U.S. chairman and senior partner at PWC, joins 'Closing Bell' to discuss the results. Almost everyone agrees taxes aren't going any lower, he says. And supply chains are being derisked across the board from trade wars to Covid.