KEY POINTS
  • Former Treasury Secretary Jack Lew says that congressional leaders and President Trump should create a tax reform plan under a central idea: "Start by doing no harm."
  • "It would be good if we could do revenue-neutral tax reform that lowers the rates by cutting loopholes — and paying for it. How you do it really matters," Lew tells CNBC.
  • "I'm a big believer we should get rid of the junk in the tax code, lower the statutory rates, have a system that's more competitive," he adds.

Former Treasury Secretary Jack Lew told CNBC on Thursday that congressional leaders and President Donald Trump should create a tax reform plan under a central idea: "Start by doing no harm."

In an appearance on "Squawk Box," Lew said any plan Congress comes up with must not make the current system worse by creating more inequities. He added that tax cuts, not tax reform, would add to the national deficit and harm the economy. He also urged Congress to avoid cuts to programs for the most vulnerable.