ATLANTA (AP) — A raspy and sometimes halting President Joe Biden repeatedly sought to confront Donald Trump in their first debate ahead of the November election. But Biden’s uneven performance crystallized the concerns of many Americans that at, age 81, he is too old to serve as president. It sparked a fresh round of calls for the Democrat to step aside. Meanwhile, the 78-year-old Trump’s rhetoric offered Americans an unwelcome reminder of the bombast he launched daily during his tumultuous four years in office, as he struggles to win over skeptical voters. He declined to clearly state he would accept the results of the November election.