I like to be informed when my arguments are based on false logic, but I'm not sure that fallacy would apply here. I take the ought of "We should have a Republic

I like to be informed when my arguments are based on false logic, but I'm not sure that fallacy would apply here. I take the ought of "We should have a Republic of free people" as given. The description of what is is why the parent's idea of creating laws to prevent the law enforcers from doing things is not always effective. Isn't the "Is–ought problem" that people describe what is to support what they think ought to be?