Studio president wanted Julia Roberts to play Harriet Tubman, producer says

British actress Cynthia Erivo is courting possible Oscar glory for her role as Harriet Tubman, the African-American woman born into slavery who turned abolitionist and activist, in the biopic movie "Harriet." However, at one point, one studio president suggested Julia Roberts for the role of Tubman, the movie's screenwriter and producer Gregory Allen Howard wrote in essay for the Los Angeles Times.