At a time when corporate leaders have been highly critical of President Donald Trump over his response to deadly violence at a white nationalist rally in Charlottesville, Virginia, Berkshire Hathaway Chairman and CEO Warren Buffett has remained quiet, telling CNBC on Wednesday he tries not to mix business and politics.

Earlier this month, a deluge of CEOs distanced themselves from Trump in the wake of Charlottesville by leaving White House business advisory councils, which were later dissolved.

The tipping point for corporate America seemed to come Aug. 15 when the president angrily doubled down on his original comments about the deadly rally, and again blamed both the white nationalists and the counterprotesters for the mayhem.

Earlier on CNBC , Buffett said he does not think the economy feels like it's growing at 3 percent, a level Trump and his administration have set as a goal for what they view as their business-friendly economic agenda of tax cuts and infrastructure spending.

Buffett was in New York City on Wednesday for a private lunch with the winner of an annual auction to benefit Glide, a San Francisco-based homeless charity.