President-elect Donald J. Trump has selected Mr. Boulos, the businessman and father-in-law of Mr. Trump’s daughter, as a senior adviser on Arab and Middle Eastern affairs.

President-elect Donald Trump has chosen Massad Boulos, the father-in-law to his daughter Tiffany, as his senior adviser on Arab and Middle Eastern affairs.

Massad Boulus is the father of Michael Boulos, who married Tiffany Trump in November 2022 at Mar-a-Lago after they got engaged at the White House during Trump’s first term. They met on the Greek island of Mykonos at a club owned by actor Lindsay Lohan, People magazine reported in 2022.