A contest of sorts has played out across Europe, the United States and the Middle East in recent days as President Trump’s two older sons have pursued a blitz of family moneymaking ventures capitalizing on their father’s name and power, each seemingly trying to outdo the other. It is a rush to cash in that involves billions of dollars with few precedents in American history. A luxury hotel in Dubai. A second high-end residential tower in Jeddah, Saudi Arabia. Two cryptocurrency ventures based in the United States. A new golf course and villa complex in Qatar. And a new private club in Washington. In many cases these new deals promoted over the last week will personally benefit not only Eric Trump and Donald Trump Jr., but also President Trump himself.