Duty free if made with 75% US parts, 25% duty on those made with less than 75% US parts (but the value of the US origin parts are exempt from that 25% tariff)
Learn about the 'Certificate of Origin' process for USMCA imports
https://ustr.gov/sites/default/files/files/agreements/FTA/USMCA/Text/05_Origin_Procedures.pdf