Fellow Canadian. The US has been moderately successful at third generation warfare (so long as they are part of an international coalition, they don't do so hot on their own). They are less successful at fourth generation warfare.
To expand, the goal of third generation warfare is outright victory in a state on state conflict. Fourth generation warfare's goal is to make war very, VERY uncomfortable in an asymmetric conflict. There is no outright victory condition (aside from total annihilation). The USA can look forward to a very generous helping of the latter should they invade Canada.
In my eyes the role of the cop is NOT to punish. The cop is there to stop the bad situation and bring them before the PEOPLE. They will decide guilt and the judge will decide punishment.
A maggot infested piece of rotten meat on the floor of a 17th century Albanian gulag is not as bad as Trump.