Not any kind of expert, but from my research, Article 19.3 of the USMCA says that tariffs can't be imposed on digital products:

1. No Party shall impose customs duties, fees, or other charges on or in connection with the importation or exportation of digital products transmitted electronically, between a person of one Party and a person of another Party.

The full chapter on digital trade: https://ustr.gov/sites/default/files/files/agreements/FTA/US...