The American economy roared into midsummer with a strong gain in hiring, but there are questions about its ability to maintain that momentum as the Delta variant of the coronavirus causes growing concern.Employers added 943,000 jobs in July, the Labor Department reported Friday, but the data was collected in the first half of the month, before variant-related cases exploded in many parts of the country.While the economy and job growth overall have been strong in recent months, experts fear that the variant’s spread could undermine those gains if new restrictions become necessary. Already, some events have been canceled, …
