Returning to the stand in his family’s civil fraud trial in New York, Donald Trump Jr described his father as “an artist with real estate”.
The younger Mr Trump made the case for the Trump Organization that the ex-president was a “genius” with the ability to create luxury from nothing.
Prosecutors say the company inflated valuations to secure favourable loans.
A loss in court threatens the Trump real estate empire, which could be banned from doing business in New York.