The controversial Republican senator Jeff Sessions is leading Donald Trump's team of foreign policy advisers.

Similarly to the presidential hopeful, the Alabamian is known for having a tough stance on immigration.

The 69-year-old politician's remarks about race in the past have drawn major attention and also served as an obstacle in his political career.

Video produced by Alexi Peristianis; illustrations by Jilla Dastmalchi; images courtesy of Thinkstock, Getty Images,