Jimmy Carter becomes first American president to celebrate turning 100
The former Democrat from Plains, Georgia, served in the White House from 1977 to 1981.
The former Democrat from Plains, Georgia, served in the White House from 1977 to 1981.
The Q&A with journalists follows mounting pressure on Biden to step aside over increased concerns around his age and health.
The US President said he has a cognitive test 'every day' in his job and has vowed to continue running for November's election.