Can I cross the Canada to the US border with my Hungarian passport?
I don't think you can enter Canada or the US with copies of passports or other documents. My understanding is riginals of travel documents are required for Canadian or US border crossings . So you will probably not get into Canada to then allow you to attempt to cross into the US. Rather than asking for advice for serious information on a forum on the internet, refer to the Immigration sites of the respective governments or contact the Embassy of the US and Canada for correct and reliable information before travelling.