Do you recall if it had ribs on the back of the motor? If the back of the motor under the cowl was ribbed, that generally indicates chinese. If it is plain painted metal, its yankee.

Probably was usa made, but it wouldn't be one of the last ones, they didn't move 148cc and 158cc manufacture. Think they initially did 5hp+ motors in china, then the smaller motors went over there around the same time the victa lawnkeeper came out (05 ish).