by Issam Ahmed Agence France Presse WASHINGTON, United States (AFP) — President Donald Trump on Friday piled pressure on the US drug regulator to quickly approve the Pfizer-BioNTech Covid-19 vaccine as America readied to roll out mass immunizations. The Washington Post reported that the White House told the Food and Drug Administration (FDA) chief Stephen Hahn to submit his resignation if the agency does not clear the vaccine by the end of the day. Hahn […]