by Brett Samuels and Peter Sullivan - 02/19/21 4:26 PM ET✕President Biden on Friday toured a Pfizer manufacturing plant in Michigan, seeking to highlight efforts to mass produce a coronavirus vaccine as his administration looks for ways to increase supply and streamline distribution.Biden visited a factory in Kalamazoo, where he met with lab workers and learned about the process behind creating one of the two COVID-19 vaccines that is being widely used across the country to inoculate Americans. It marked just the second time Biden had traveled outside the Washington, D.C., area since taking...…by Brett Samuels and Peter Sullivan - 02/19/21 4:26 PM ET✕President Biden on Friday toured a Pfizer manufacturing plant in Michigan, seeking to highlight efforts to mass produce a coronavirus vaccine as his administration looks for ways to increase supply and streamline distribution.Biden visited a factory in Kalamazoo, where he met with lab workers and learned about the process behind creating one of the two COVID-19 vaccines that is being widely used across the country to inoculate Americans. It marked just the second time Biden had traveled outside the Washington, D.C., area since taking...WW…