which reserves powers not delegated to the federal government..
Doesn't your federal government have the power to secure borders from invasions? Article I, Section 8?
Hell, I'm not even an American, but you seem to know less about your own country than foreigners do!
Apparently not, since Article 1, section 8 refers to the powers of the legislative branch (Congress), as opposed to the executive branch , and has nothing whatsoever to do with the “power to secure borders from invasions”. The only words in the entirety of Section 8 that might apply to immigration are “To establish a uniform rule of naturalization”, which according to the constitution is done by the legislative branch, and Trump has violated that with illegal and blatantly unconstitutional executive orders eliminating “Birthright Citizenship”. as well as removing the legal status of hundreds of thousands of legal immigrants.
they merely deny federal agents
That is texbook aiding and abetting. Most countries consider that a serious crime.
Only if your so called “textbook” is a comic book.
You had to delete 80% of the sentence you quoted to take it so far out of context it is a non-sequitur at best. My full sentence that you are misrepresenting is:
“Sanctuary jurisdictions do not assert any right to actively impede enforcement by federal officials, they merely deny federal agents the assistance of state and local governments, particularly law enforcement agencies and they are well within their Constitutionally granted right to do so.”
Which isn’t even in the same ballpark as “aiding and abetting”, first of all, we are talking about the Constitution here and “aiding and abetting” is not identified as a crime in the US Constitution, it is 18 U.S. Code § 2, which makes it is a crime to intentionally assist in the commission of a federal crime.
Let’s put it back in context, the Tenth amendment establishes the sovereignty of the state and makes it clear they have no legal obligation whatsoever to deploy their own law enforcement resources to assist federal agents in performing their duties. In fact, because the Tenth Amendment says that states only have authority that were not explicitly assigned to the federal government, you could make the case that the tenth amendment is explicit that they are not to enforce immigration laws, it would be weak, but the argument can be made. The strong argument that can be made is that the tenth amendment explicitly states that they are not obliged to assist federal agents in executing their duties in immigration, that right is explicitly granted to states by the constitution.
Now, since you brought it up, let’s talk about “aiding and abetting”, as I already pointed out, much of the administrations draconian efforts to have mass deportations have been through illegal and unconstitutional executive orders, violating the first amendment (deporting students for exercising their right to free speech), fifth amendment (violating due process), and 14th amendment (Denying the constitutional right to birthright citizenship), you could certainly make a sound legal argument that deploying state and local law enforcement to assist ICE with the administration's “mass deportation” efforts would constitute the crime of “aiding and abetting”.
Let’s also recognize that these illegal and unconstitutional executive orders and all the hateful rhetoric designed to incite outrage among the base, have been ineffective as far as actually deporting illegal immigrants. In the final year of the Biden administration, the rate of deportation of illegal immigrants was much higher than the rate Trump has achieved so far. It’s served as performance politics, it’s been divisive, it has been raw meat to the mean-spirited hate mongering base, but in terms of effectiveness, it has been a failure, turns out that so far, Trump has failed to address the problem of illegal immigration where Biden was successful.
In his first presidency, despite all of the hateful rhetoric, draconian measures, separating families, and joyous cruelty, Trump deported less than half the number of illegal aliens that Obama did in either of his four-year terms.
Both Obama's and Biden’s immigration policies primarily focused on deporting immigrants with criminal charges and those considered national security threats. By contrast, under President Trump, criminal priorities were eliminated, targeting all undocumented individuals, consequently, in terms of removing immigrants who threaten our country, Trump has failed miserably. Despite the Trump administration’s rhetoric that he is deporting "the worst of the worst”, the fact is, 80% of immigrants taken to detention centers in Trump's second term had no criminal record.
All the hatemongering and cruelty may have given his MAGA base an erection, but it has been ineffective and resulted in a dramatic drop in his overall favorability ratings.