Mayor de Blasio is the first to push for vaccine passports in the US.
But his own passport may not pass muster. A background check site indicates he 'may be' on a do not fly list. Didn't check for sure [requires payment], but these sites are quite accurate.
He does have a convoluted history. Parents accused of communism / secret government work. He worked to help the Sandinistas. And has changed his name every 20 years - so is now due for a new one.
He is widely credited with ruining NYC with his policies.
Alternate reasons:
Wrong person / misleading info.
He's had 3 different legal names.
He can't prove who he is.
He's done something wrong.
Something related to the digital passport issue.