The business dealings of Hunter Biden have become a contentious issue, with President Trump and his associates calling attention to the 49-year-old Biden's work in Ukraine, China and elsewhere. According to the New York Times, the younger Biden increased his international business efforts during his father’s second term as vice president and began associating with figures about whom the U.S. or its ally nations were suspicious. Hunter Biden reportedly began advising Gabriel Popoviciu, a Romanian businessman said to have opened the country's first Pizza Hut restaurant, who came under authorities’ scrutiny over his real estate dealings. The investigation into Popoviciu,...