(1) For a Trial, Hearing, or Deposition. A subpoena may command a person to attend a trial, hearing, or deposition only as follows: (A) within 100 miles of where the person resides, is employed, or regularly transacts business in person; or (B) within the state where the person resides, is employed, or regularly transacts business in person, if the person (i) is a party or a party's officer; or (ii) is commanded to attend a trial and would not incur substantial expense. (2) For Other Discovery. A subpoena may command: (A) production of documents, electronically stored information, or tangible things at a place within 100 miles of where the person resides, is employed, or regularly transacts business in person; and (B) inspection of premises at the premises to be inspected.
yeah this subpoena is bullshit
If you live in Canada and American courts are trying to get you then you should do a motion to dismiss on grounds that the jurisdiction does not apply to you since you did not commit any crimes in the United States of America because you were not in the United States of America
With a motion to dismiss you do not even have to enter a plea of guilty, not guilty or no contest because the case is dismissed before that stage