FILE PHOTO: U.S. Attorney General Jeff Sessions addresses a news conference to discuss an arrest related to the investigation of at least a dozen parcel bombs sent to Democratic politicians and high-profile critics of President Trump, at the Justice Department in Washington, U.S., October 26, 2018. REUTERS/Jonathan Ernst
Brain - Former Attorney General Sessions enters U.S. Senate race in Alabama
Key Highlights

Jeff Sessions said he was seeking the 2020 Republican nomination from Alabama, the position he resigned to join the Trump administration

Sessions was an early and loyal supporter of Trump

Trump has called his selection of Sessions as attorney general " the biggest mistake " of his presidency

Sessions said he had not yet had a chance