citizenship certificate enough to apply for TN visa

[chibiks]

Or a Canadian passport is definitely required? Can someone confirm?

 

[WindsorFeb15Aspirant]

Or a Canadian passport is definitely required? Can someone confirm?

Citizenship Certificate is not a travel document. You need to get your passport to apply for any visa.

 

[screech339]

Or a Canadian passport is definitely required? Can someone confirm?

US won't accept Canadian citizenship certificate as official travel document. Only passports. So you will have to tell your US employer to wait until you get your Canadian Passport.