Nikki Haley questions Biden's longevity in office.

Republican presidential candidate Nikki Haley has suggested that President Joe Biden, who is 80 years old, is unlikely to "make it" to the end of a second term if he were to be reelected. Haley's campaign continued the criticism on Thursday, tweeting that "a vote for Joe Biden is a vote to make Kamala Harris president." Biden's campaign declined to comment, and the White House responded by saying they "forgot she was running." Haley's platform includes proposed mandatory mental competency tests for politicians over 75.