In one or two paragraphs, explain how the supremacy clause helps maintain order in
the United States.

the supremacy clause helps maintain order in the united states because it established that the federal constitution and federal law generally, takes precedence over state laws, and even state constitutions. Its important because it says all judges in the state court must follow the constitution federal laws and treaties if there is a conflict with state laws. It helps maintain order because if something happen in the United states where there was a conflict with state laws, the judges must follow the laws and agreement.

Explanation:

explanation:

may i ask what challenges?

answer; being clearly political;