The iconic sportsman was convicted for failing to serve in the military during the Vietnam War, but he was later exonerated.
US President Donald Trump has said he is considering a pardon for the late boxing legend Muhammad Ali.
The iconic sportsman – who died in 2016 at the age of 74 – was convicted of refusing to turn up for military duty in 1967 after being drafted to fight in the Vietnam War.
He lost his boxing licence because of the fallout and was not allowed to return to the ring until 1970.
But the following year, Ali had the conviction quashed after a successful appeal to the US Supreme Court, and President Jimmy Carter granted a blanket pardon to all draft evaders in 1977, so it is not clear what Mr Trump meant.
He told reporters in Washington he was looking at “thousands of names” of people who could be granted clemency.
Earlier this week, the president commuted the life sentence of a woman whose cause was championed by reality TV star Kim Kardashian West.