So did many other countries. The US is getting those doses faster by preventing the Pfizer factories in the US from exporting any doses, so they have no choice

So did many other countries. The US is getting those doses faster by preventing the Pfizer factories in the US from exporting any doses, so they have no choice but to sell all of that supply to the US. That's why Canada is getting all of the Pfizer/BioNTech doses it purchased from the Belgium factory rather than one right across the border in the US.