There is an immediate problem: the device was being searched, and this statute criminalizes destruction of property to prevent seizure, not searches. I don't think this statute applies this situation. Regardless of whether the border agents could lawfully search his phone at the border, they didn't have grounds to seize it. I suspect this prosecution will quietly be dismissed within a few months.
Here is the statute Tunick is indicted under: https://www.law.cornell.edu/uscode/text/18/2232
There is an immediate problem: the device was being searched, and this statute criminalizes destruction of property to prevent seizure, not searches. I don't think this statute applies this situation. Regardless of whether the border agents could lawfully search his phone at the border, they didn't have grounds to seize it. I suspect this prosecution will quietly be dismissed within a few months.