They can search the physical books and laptops all they want but not the content, that is crossing a huge red line that simply cannot be crossed in any free state and raises serious questions about our constitution, the rule of law and the court system.
When it comes to China or Russia we automatically presume the moral high ground to point fingers, but then do not detect the contradiction in this quiet acquiescence or being reduced to seeking workarounds in chrome books and such.
There is a dissonance of principles observed more in posturing and grandstanding that makes criticisms of other states not a commitment to principle but the worst kind of denial and jingoism.
It really is time to stop reacting and quietly reflect on what we have become. Are we simply a society of income and access to products with everything else open to expediency and pretension.