Washington (AFP) – Presidential hopeful Joe Biden named Senator Kamala Harris, a former rival in the White House race, as his running mate Tuesday, marking a historic first for American women of color.Biden’s announcement capped a months-long search for a Democratic partner to challenge President Donald Trump in November.Harris, who would become America’s first female and first black vice president if elected, is a “fearless fighter for the little guy, and one of the country’s finest public servants,” Biden, 77, said in revealing his running mate.”I’m proud now to have her as my partner in thi…