Earlier quoted context omitted.
>> Being blocked from air travel is indeed a violation of liberty. Very much depends on how permissive your definition of liberty is. Not trying to be pedantic, this is actually a pretty big issue in constitutional law. It does seem to be a violation of due process, at the very least. An aggressive attorney may even allege a violation of the Equal Protection Clause in skirting the rebuttal of "there is a way to chall…
It's not pedantic. Liberty is definitely one of those rights that isn't 100% clear. The law is sometimes unfair/rough when it comes to balancing the rights of the individual against the rights of the state to protect against terrorism (real or perceived). And then we go and revoke the passports of people who are behind on child support payments, which isn't even a crime, and suddenly restricting the ability of people…
In many cases, this is likely true. However, the nature of the word (which doesn't have a definition clearly defining it), means that adding clear definitions to it begins to risk what the founders intended to avoid by not enumerating any rights (hence the Bill of Rights as amendments, including the 9th Amendment). Again, all this suggests to me that due process and equal protection, rather than creating a new, judicially defined right to travel, will be clearly clarified as the crux of the opinion should it hold. The higher court can just defer to stare decisis and judicial restraint on the rest.