The expansion in vaccine supply marks a critical time to confront deep skepticism among large numbers of rural whites and Republicans.A healthcare worker administers the second dose of the Pfizer Covid-19 vaccine during the first day of the second dose vaccinations at the Ratliff Stadium Mass Vaccination Site on March 2, 2021, in Odessa, Texas. | Jacob Ford/Odessa American via APThe Biden administration can finally ship large quantities of coronavirus shots into the American heartland, where health officials are encountering a reservoir of vaccine skepticism among rural Americans who’ve...…The expansion in vaccine supply marks a critical time to confront deep skepticism among large numbers of rural whites and Republicans.A healthcare worker administers the second dose of the Pfizer Covid-19 vaccine during the first day of the second dose vaccinations at the Ratliff Stadium Mass Vaccination Site on March 2, 2021, in Odessa, Texas. | Jacob Ford/Odessa American via APThe Biden administration can finally ship large quantities of coronavirus shots into the American heartland, where health officials are encountering a reservoir of vaccine skepticism among rural Americans who’ve...WW…