Final answer:
CalHR's policies can be superseded by federal laws, presidential executive orders, or judicial decisions, as they represent higher legal authorities with the power to implement policy changes on a national scale.
Step-by-step explanation:
CalHR, which is the California Department of Human Resources, provides policy frameworks for state agencies. However, the policies set by CalHR may be superseded by various higher legal authorities. The federal government can override CalHR's policies through mechanisms such as congressional legislation, for example, passing a bill like the Health Care and Education Reconciliation Act (HCERA) of 2010. Additionally, executive orders from the president may enact policy changes that overrule CalHR's guidelines, provided they are within the president's scope of authority. Lastly, judicial decisions or opinions, such as the landmark case of Brown v. Board of Education of Topeka (1954), which ended school segregation, can also supersede state department policies if they are deemed unconstitutional or otherwise legally invalid.