Because, of course he did

In 2005, Donald Trump had an idea to boost ratings for “The Apprentice,” … Trump suggested putting an all-white team against an all-black team and he thought it would become the highest-rated show on television.

He floated the idea on Howard Stern’s radio show in April 2005, … “Do you like it?” Trump asked Stern. To which he replied: “Yes.” Trump then asked Stern’s African-American co-host, Robin Quivers, the same question. “Well,” she said, “I think you’re going to have a riot.”

…”I think that it would be handled very beautifully by me. Because, as you know, I’m very diplomatic,” he said to Stern, adding that while there would be a mix of light-skinned and dark-skinned black contestants, the white team would be strictly blondes only. Source: Business Insider