They’re pointing out that calling the federal government “a big union” is inaccurate, and reasons why.

It's accurate. The constitution of the United States explicitly describes it as a union in the preamble.

	▲	mcmcmc a day ago \| parent \| next [-]
		Don’t be dense, we’re discussing labor unions, not all possible interpretations of the word “union”
	▲	ericmay a day ago \| parent \| prev [-]
		> The constitution of the United States explicitly describes it as a union in the preamble. No, there's no relation.