Biden increasingly uses shorter stairs after fall to allay concerns over age, stumbles

Biden has doubled his use of shorter stairs to board Air Force One after an embarrassing fall at a graduation ceremony.
White House aides implementing measures like note cards and enlarged teleprompters to prevent future incidents.
Congressional Democrats and former diplomats acknowledge worries about Biden's age and stamina.
Majority of Americans oppose Biden running in 2024, citing age as a major factor.
Former candidate Hillary Clinton supports Biden despite acknowledging concerns over his age.