Wow, from future Pulitzer winner David Fahrenthold:

Donald Trump’s charitable foundation has received approximately $2.3 million from companies that owed money to Trump or one of his businesses but were instructed to pay Trump’s tax-exempt foundation instead, according to people familiar with the transactions.

In cases where he diverted his own income to his foundation, tax experts said, Trump would still likely be required to pay taxes on the income. Trump has refused to release his personal tax returns. His campaign said he paid income tax on one of the donations, but did not respond to questions about the others.

Big, big story.