Kamala Harris doesn’t want Joe Biden’s baggage. But she’s also counting on him to help her win the election. That’s nowhere more apparent than in Pennsylvania, the critical battleground where Biden spent his childhood. Even as working-class voters here continue to blame the president for high prices — and breathe a sigh of relief that a wizened Biden is no longer on the ballot — many still view him as “Union Joe.” For Harris, who appeared with Biden at a campaign stop here Monday,...