Canada and Europe are doing their own test flights to re-certify the Boeing 737 MAX, which Boeing now refuses to call the MAX, instead of just relying on the FAA.
But the U.S. wouldn’t let Canadian and European inspectors into the U.S. to test the plane with Boeing – because coronavirus (the regulators might bring the virus into the U.S.). So regulators get picked up in Vancouver by Boeing, flown to Beoing field and back.