The Latest: The real test for Harris’ campaign begins in the presidential race against Trump

Vice President Kamala Harris accepted her party’s nomination and offered her policy agenda on the fourth and final night of the Democratic National Convention on Thursday. Now, a stark reality exists as activists, operatives and party leaders begin leaving Chicago: The real test for Harris has only just begun. Meanwhile, on a dirt road below the hills of Arizona, Donald Trump used a stretch of wall and a pile of steel beams to draw a visual contrast between his approach to securing the border and that of his opponent. Today, the Republican presidential nominee is set to appear just miles away from independent presidential candidate Robert F. Kennedy Jr. in the Phoenix area as speculation grows that Kennedy could drop his bid and give Trump his endorsement.