Trump burned his bridges and wore out his welcome in this country - in the investment banking community. By the 1990's no U.S. bank would lend Trump a friggin' dime! Hell, not even the People's Bank of China would.
Trump turned eastward. Aside from the freaky confluence of events involving Mr. Burnett and "The Apprentice" in the early 2000's, propelling this Dip-Shit into public notoriety, the Orange Dumpster sucked up to Deutschebank for some loans, notably for his Chicago Trump Tower. But even this proved a pitfall for that bank as the Dumpster "welched" on upwards of $760-million in loans.
No, the only source of investment cash/money through the Trump criminal enterprise was from Russia, Ukraine, Kazakhstan. This is where Felix Sater & Tevfik Arif come into the picture. In 2002 these two fellow Ukrainian emigres set up shop in the Trump Tower on the 24th floor - 2 floors below Trump's 26th floor office. Their investment firm, Bayrock Capital, got mysterious infusions of cash from Tevfik's brother back in the Ukraine - everytime they were needed. Felix Sater, during this time, had befriended the "Dump" and pitched all kinds of deals to the Orange One. Sater had connections back in Russia - his father worked for Russia's largest mafia family. Between these two sources a good deal of cash made its way into Trump real estate projects - such as the Soho condo/office complex in downtown Manhattan.