“President Biden has instructed his agencies to ignore federal statutes that mandate the detention of illegal immigrants. The failure of the Biden Administration to fulfill the duties imposed by Article IV, § 4 has triggered Article I, § 10, Clause 3, which reserves to this State the right of self-defense. For these reasons, I have already declared an invasion under Article I, § 10, Clause 3 to invoke Texas’s constitutional authority to defend and protect itself. That authority is the supreme law of the land and supersedes any federal statutes to the contrary.”
It doesn’t work like that. Source: The Tenth Amendment.
In other words, it’ll trigger a constitutional crisis like you couldn’t imagine and pretty much end the United States overnight if the federal government violated the tenth amendment and asserted itself by overthrowing the elected leader of a state. It simply wouldn’t be legal for the federal government to do something like that.