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The New York Times' report on President Trump's tax info shed a significant amount of new light on his businesses and personal wealth, but there are still several questions left unanswered. Journalist Adam Davidson, who has reported on Trump's business dealings for The New Yorker, suggests people look to Trump's golf courses to find out more.

One of Davidson's big takeaways from the Times report is that Trump had a "new source of funds" beginning around 2011 after he had finished "blowing through" most of the money he received from his father, television producer Mark Burnett, and through loans. It's not clear who this alleged new source of money may be, but Davidson believes golf courses could be the key. In 2011, Davidson writes, Trump went into business with families from Azerbaijan, and was also "flirting" with Georgian and Kazakh businesses that have ties to Russian President Vladimir Putin. Between 2011 and 2016, all of those groups were known to be laundering money through golf courses.

Trump, of course, has his own courses across the U.S., as well as in other countries, and those properties have cost him a lot of money. Davidson singled out his Scottish golf resorts, which have prompted investigation requests in the past, because that is where he, perhaps confoundingly, spent the post-2011 money.

But speculation is just that, and Davidson argues that little more can be known about who Trump "owes and what they know about him" until the alleged funding source is uncovered.