Actually they are doing it "illegally". If the order of the hand in their system is that laws are subordinate to their constitution, then no law can violate the constitution without it being an "illegal law". In their world they are committing treason, but that doesn't matter.
The 4th amendment of the U.S. Constitution and article 19 of the NH Constitution prohibit warrantless searches. They have used double speak and "case law" to reinterpret the english language so that words hold a different meaning. I can attest to this, I was told in a NH court that in New Hampshire article 15 (right of the accused) , the word "and" actually means "either / or" . I shit you not.
Even the judge sort of smirked at that one. His referring to case law reminded of a kid that I grew up with who had a dad that would umpire our ball games....all of his pitches even the ones in the dirt were "strikes". All of his foul balls were "homeruns".
The bottom line is they can do what they want and they are just being more brazen about it now.
NOTE- my mentioning their Constitution is not my endorsement of it. Besides, they abandoned it before I did.