With Trump's tax bill set to dent giving by the wealthy, can middle-class donors make up the difference?
A woman puts money into a Salvation Army red kettle outside of Giant Supermarket in Alexandria, Virginia on November 22,...
A woman puts money into a Salvation Army red kettle outside of Giant Supermarket in Alexandria, Virginia on November 22,...
Warren Buffett, Bill and Melinda Gates, in an interview on May 5, 2015CNBCA version of this article first appeared in...