You mean other than all of the past problems getting credit which forced him to seek out foreign funding in the first place? His businesses lose money and having so many bankruptcies where his partners have been left holding the bag is going to deter most bankers unless they have other ways to recoup their money.

Here’s an old report about his credit rating - note the “likely to default”:

https://www.foxbusiness.com/politics/trumps-business-credit-...

Here’s an example of what it took for him to get loans in the past:

https://www.nytimes.com/2019/03/18/business/deutsche-bank-do...