It seems that the things Canada must be on guard against (Oh, Canada we stand on guard for thee!) are exactly the same things that are slowly deteriorating the quality of life in the USA. The list is long but might be distilled into a few key features:
1) Creeping obsolescence of the constitution and disregard for the personal protections that are enshrined in it.
2) A dichotomous legal system where the wealthy and poor have vastly different avenues of redress available.
3) a. An endless avalanche of burdonsome laws unevenly enforced, or not enforced at all. Every problem, no matter how significant, being the subject of a new law; b. Unsuccessfully attempting to regulate human behavior by criminalizing acts where the only victims are consenting adults and thus clogging the courts and prisons; c. A dysfunctional criminal justice system and rampant police corruption.
4) Uncritical acceptance of any argument based on safety or national security.
5) An absurd tax code, too complex to be understood by those who are charged with enforcing it.
6) Legislative bodies that routinely put narrow special interests of patrons above the broader interests of the electorate.
7) A poorly educated electorate.
8) An out of control military-industrial complex.
9) A consumer medical care system run by a cartel and protected by vastly excessive government regulation.
10) A unshakable belief in superiority. This is always the first step in the decay process of any company, organization, institute, government entity, or nation.
The problems are all well understood and effective remedies are known for every problem. It is not the existence of these defects, but the lack of resolve to remedy them that will, after many years of slow decay, eventually destroy a nation. It can even be argued that human nature assures the eventual downfall of any large nation. If that is the case, then it is only the rate of decay we can alter with our paltry efforts.