Not technically, but he comes off as ethically-challenged:
https://en.wikipedia.org/wiki/Trump_Winery
Trump bought the 1,300-acre vineyard and winery for a fraction of its original value. He was criticized for his “ethics” during this acquisition. He began by buying the 200 acres surrounding the property for less than $500,000. He then placed “No Trespassing” signs around the property. This warded off potential buyers and gave Trump exclusive access to the property. This forced the property into foreclosure and gave Trump the opportunity to buy the land from Bank of America for $3.6 million, a small fraction of the property’s real worth ($12M).[6] Development and renovation of the property was given to Eric Trump, who also supervised the acquisition.