The correct matches are the following.
Bill Clinton: battled with the Republican Congress.
George W. Bush: War on Terrorism.
Al Gore: Clinton's vice president.
Barack Obama: the nation's first African American president.
We are talking about recent presidents and a vice-president of the United States.
Bill Clinton battled with the Republican Congress and was involved in a sex scandal in the "Monica Lewinsky affair," which made him be to be impeached by Congress. Al Gore was his vice-president and the Democratic Candidate that lost the 2000 controversial Presidential Election against Republican candidate George W. Bush. After the terrorist attacks of September 11, 2001, Bush started a war against terrorism. Barack Obama: was the nation's first African American President, a Democratic politician that served two terms (2008-2016).