After months of speculation, Joe Biden announced his presidential campaign last week.
The former Vice President gave his first speech as a candidate in Pittsburgh, Pennsylvania yesterday, but his delivery attracted some attention, as he seemed to slur his words throughout.
At 76, Biden is one of the oldest people to run for president.
His fellow candidate Bernie Sanders is a year older, but has been noticeably sharp and articulate.
Is this incident a sign that Biden could be too old for the White House?
Cal Thomas and Marion McKeone discussed this and more in our US slot.