For a president who categorically denies any involvement with Russia, but asked them to help him win the election, the Trump has surrounded himself with people who are involved with Russia at the very highest levels.

This would include Secretary of State Rex Tillerson, who knows and does business deals with Vladimir Putin, Jared Kushner, who meets with megabanker Sergey Gorkov (head of VneshEconomBank and trained as a spy at the Russian Federal Security Service), Attorney General Jeff Sessions (who lied about his contacts with the Russian ambassador during his confirmation hearing), and of course international wheeler dealers like Paul Manafort and Michael Flynn, both now fired for their Russian misadventures. 

Then there are the large loans from Russian banks to Trump family businesses, as discussed by Jared Kushner. Very likely, the Trump has a lot to hide.

Stephen J. Remington