Yes it is a expository writing
The article 1 section 8 of this constitution helps to reinforce the idea of federal supremacy.
<h3>What is federal supremacy?</h3>
This is born out of the idea that the laws taken by the federal government of the United States remains the supreme law of the land.
This idea is from the fact that federal laws have to precede over state laws at all points in time.
Read more on the supremacy clause here: brainly.com/question/1481445
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