United States (US) Democrats are urging President Joe Biden to issue a mandate for all airline passengers to either show proof of full vaccination against COVID-19 or a negative test before boarding a domestic flight, according to local media reports. 

“This is a necessary and long overdue step toward ensuring all Americans feel safe and confident while travelling and reduce the chances of yet another devastating winter surge,” Xinhua news agency quoted the reports on Sunday citing a letter signed by over 30 Democrats as saying.