What is the single best argument for Texas independence?

That Texans, and only Texans, should decide the future of Texas. Every other argument, the money, the debt, the border, the overreach, is downstream of that one. Self-government is the case. The rest is evidence.

The principle is the consent of the governed

Strip the argument to its core and it is the oldest idea in free society: a government draws its just authority from the consent of the people it governs. Texas does not fully have that. The decisions that shape life here are made, in large part, by a federal government that Texans cannot hold to account and are permanently outvoted within. Independence corrects that. It puts the people of Texas in charge of the government of Texas. That is the whole case, and it is enough.

Every other reason is proof of the same point

The hundreds of billions that leave the state. The federal debt Texans never voted for. The border Texas cannot secure on its own terms. The flood of regulation written elsewhere. These are not separate arguments. They are demonstrations of what happens when a people do not govern themselves. They are the receipts. They show the cost of the missing principle, and they all point back to it.

It is a positive case, not just a complaint

This is not only about what is wrong. It is about what becomes possible. Self-government means Texas can build a government in its own image, sized to its own needs, answerable to its own people. It means the freedom to try, to fail, to fix, and to try again, on Texan terms. The best argument for independence is not anger at Washington. It is the opportunity of self-rule, the chance Texans have never actually had.

Texas is uniquely able to make the principle real

Self-government is the right of any people, but Texas is unusually equipped to exercise it. Texas already runs its own power grid, fields its own military department, and operates a state-level agency for nearly every function of a nation. Texas is structurally capable of doing what nations do. So the principle is not aspirational here. It is within reach. Texas can govern itself because, in most of the ways that count, it already does.

Why it all reduces to one sentence

The clearest way to see it is to ask the question the other way around. If Texas were already an independent nation, knowing what we know about how it is governed now, would Texans vote to hand that power back to Washington? Put like that, the answer is obvious, and it reveals the real argument. Texas should govern Texas. Everything else follows.

The bottom line

The single best argument is self-government: the right of Texans to decide their own future. Every other reason is a symptom of not having it. Independence is how Texas gets it.