'It's fascinating': Author reveals 'horrifying' reason why Trump's taxes remain secret

President Donald Trump and disgraced financier Jeffrey Epstein were in some shady business deals together, and one incident may hold the key to understanding why the president has never publicly released his tax returns, according to one Trump expert.

Unlike his predecessors, Trump has never publicly released his tax returns. He has claimed that they were being audited and used other excuses to delay their release. To journalist Michael Wolff, who has written four books about Trump, these...