The Greyhound bus company reportedly is pushing the Biden administration to come up with a way to guarantee that migrants seeking to board its buses from the border have tested negative for the coronavirus before being transported across the country.

“It is critical to public safety that [Immigration and Customs Enforcement] provide 100% assurance that no one released that can be reasonably expected to ride a Greyhound bus be infected with COVID-19 (or mixed with other potential passengers that have tested negative),” Greyhound President and CEO David Leach wrote in a letter dated Wednesday to Department of Homeland Security Secretary Alejandro Mayorkas, obtained by Border Report.