Final answer:
Government regulations related to immigration and border security are among the most important in the field of international HRM, significantly influencing global labor mobility and assignments. In Canada, labor relations are indeed mainly regulated at the national level. All countries enforce some form of border control and immigration policies, contrary to the statement that they all use detainment camps.
Step-by-step explanation:
When discussing regulatory issues including immigration and border security, the true statement is: government regulations related to immigration and border security are among the most important in the field of international HRM (Human Resource Management). Immigration policies and border control measures play a significant role in determining who can enter a country, either for work or as a permanent resident, impacting global HR management significantly.
While not all countries employ border regulations and detainment camps, most do have some form of border control and immigration policy. However, the statement suggesting that governmental regulations related to immigration and border security rarely affect the world of global HR management is untrue, as these regulations are crucial in shaping international labor mobility and assignments.
Regarding labor relations in Canada, it's true that they are primarily regulated at the national level rather than at the local level, as federal laws typically govern these issues.