Joe Biden’s reelection campaign limped into the US Independence Day holiday, exhausted by a week of the incumbent clawing to maintain his hold on his party’s nomination.Most Read from BloombergBiden’s Fourth of July Shrouded by Pressure to Drop 2024 BidKamala Harris Is Having a Surprise Resurgence as Biden’s Campaign UnravelsHouse Democrats Consider Demanding Biden Withdraw From RaceChina Can End Russia’s War in Ukraine With One Phone Call,