"It is a very political thing. I've spoken to Pfizer, I've spoken to all of the people that you have to speak to, Moderna, Johnson & Johnson, and others," Trump said. "They can go faster than that by a lot. It's become very political because [of] the left."
Bourla has said his company could have enough data to submit for authorisation by the end of October. While Pfizer and Boston-based biotech Moderna started their phase 3 trials on the same day in July, Pfizer's trial design means it could get results earlier.
AstraZeneca's US trial has been paused as the regulator investigates a possible serious side effect in a participant.
Stéphane Bancel, Moderna's chief executive, told the FT on Wednesday that it would only have the average of two months' follow-up time for participants, desired by the Food and Drug Administration for an emergency authorisation, by November 25.
Bourla insisted Pfizer would not "succumb to political pressure".
He added: "The only pressure we feel — and it weighs heavy — are the billions of people, millions of businesses and hundreds of government officials that are depending on us."
Unlike many other companies which have taken government funds for clinical trials or to expand manufacturing, Pfizer has only signed a pre-order agreement with the US government. Bourla said the company had put almost US$2 billion ($3b) of its own money at risk.
"We've engaged with many elected leaders around the globe through this health crisis, but Pfizer took no investment money from any government," he wrote. "Our independence is a precious asset."
Written by: Hannah Kuchler
© Financial Times