President Jimmy Carter's younger brother, Billy, became the target of a Senate investigation over his ties to the Libyan government and appeared before the Senate Judiciary Committee in August 1980. AP hide caption
Hunter Biden
Wednesday
Tuesday
Former Vice President Joe Biden, one of the Democratic presidential hopefuls, speaks during the fourth Democratic presidential debate, which was co-hosted by The New York Times and CNN. Saul Loeb/AFP via Getty Images hide caption
Saturday
Democratic presidential candidates Joe Biden and Sen. Elizabeth Warren, D-Mass., connect before the September Democratic presidential primary debate. David J. Phillip/AP hide caption
Friday
Ukraine's prosecutor general, Ruslan Ryaboshapka, announced Friday that he will review cases involving Hunter Biden but that he isn't aware of any evidence of wrongdoing by Biden. Valentyn Ogirenko/Reuters hide caption
Burisma Group, a Ukrainian energy company, keeps a low profile. This building, which houses the offices of a Burisma subsidiary, is located in a residential part of the country's capital of Kyiv. Lucian Kim/NPR hide caption
Friday
Ukrainian President Volodymyr Zelenskiy smiles after meeting United Nations Secretary-General António Guterres during the 74th Session of the General Assembly on Thursday in New York. Timothy A. Clary/AFP/Getty Images hide caption
President Trump's personal lawyer Rudy Giuliani has coffee with Ukrainian-American businessman Lev Parnas at the Trump International Hotel in Washington on Sept. 20. Aram Roston/Reuters hide caption
Tuesday
Democratic presidential candidate Joe Biden spoke about Ukraine and President Trump on Tuesday. Olivier Douliery/AFP/Getty Images hide caption
Biden Blasts Trump As A President Who 'Believes He Is Above The Law'
Then-Vice President Joe Biden and his son Hunter Biden attend a basketball game in Washington in 2010. Joe Biden frequently dealt with the Ukrainian government and pressed the government to deal with corruption issues. At the same time, Hunter Biden was on the board of a leading gas company in Ukraine. President Trump and some of his supporters have called for an investigation. Nick Wass/AP hide caption
Saturday
Former U.S. Vice President Joe Biden says President Trump's call with the Ukrainian president was "an overwhelming abuse of power." Bloomberg/Bloomberg via Getty Images hide caption
Tuesday
Joe Biden and his son, the late Beau Biden, embrace at the 2008 Democratic National Convention in Denver. Beau Biden delivered the keynote address that year. He died seven years later from brain cancer. Spencer Platt/Getty Images hide caption
Thursday
Joe Biden fields questions as his son Hunter Biden looks on at a campaign stop back in 2007 in Dubuque, Iowa. Scott Olson/Getty Images hide caption